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Okay, this is the hardest part of the whole project…picking your topic. But here are some ideas to get you started. Even if you don’t like any, they may inspire you to come up with one of your own. Remember, check all project ideas with your teacher and parents, and don’t do any project that would hurt or scare people or animals. Good luck!

  • Does music affect on animal behavior?
  • Does the color of food or drinks affect whether or not we like them?
  • Where are the most germs in your school? ( CLICK for more info. )
  • Does music have an affect on plant growth?
  • Which kind of food do dogs (or any animal) prefer best?
  • Which paper towel brand is the strongest?
  • What is the best way to keep an ice cube from melting?
  • What level of salt works best to hatch brine shrimp?
  • Can the food we eat affect our heart rate?
  • How effective are child-proof containers and locks.
  • Can background noise levels affect how well we concentrate?
  • Does acid rain affect the growth of aquatic plants?
  • What is the best way to keep cut flowers fresh the longest?
  • Does the color of light used on plants affect how well they grow?
  • What plant fertilizer works best?
  • Does the color of a room affect human behavior?
  • Do athletic students have better lung capacity?
  • What brand of battery lasts the longest?
  • Does the type of potting soil used in planting affect how fast the plant grows?
  • What type of food allow mold to grow the fastest?
  • Does having worms in soil help plants grow faster?
  • Can plants grow in pots if they are sideways or upside down?
  • Does the color of hair affect how much static electricity it can carry? (test with balloons)
  • How much weight can the surface tension of water hold?
  • Can some people really read someone else’s thoughts?
  • Which soda decays fallen out teeth the most?
  • What light brightness makes plants grow the best?
  • Does the color of birdseed affect how much birds will eat it?
  • Do natural or chemical fertilizers work best?
  • Can mice learn? (you can pick any animal)
  • Can people tell artificial smells from real ones?
  • What brands of bubble gum produce the biggest bubbles?
  • Does age affect human reaction times?
  • What is the effect of salt on the boiling temperature of water?
  • Does shoe design really affect an athlete’s jumping height?
  • What type of grass seed grows the fastest?
  • Can animals see in the dark better than humans?

Didn’t see one you like? Don’t worry…look over them again and see if they give you an idea for your own project that will work for you. Remember, find something that interests you, and have fun with it.

To download and print this list of ideas CLICK HERE .

hypothesis science fair ideas

  • The scientific method
  • science fair resources
  • a little helpful advice

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Teach Beside Me

100+ Easy & FUN Science Fair Project Ideas

This post may contain affiliate links.

hypothesis science fair ideas

Looking for FUN   science projects for kids ? Science is one of our favorite subjects around here. I have a huge list of over 100 easy science experiments for kids. You can use these classic science fair ideas when helping your child create their next science fair project. Kids will love these fun projects and experiments!

100 Fun and Easy Science Fair Project Ideas for kids

See my Scientific Method Worksheets and Posters to help teach the process of the scientific method including these 6 steps:

  • Ask a question
  • Make a hypothesis
  • Record Data

These science fair project ideas can be used for may grade levels including elementary school aged kids, middle school aged kids and some would even work for high school. Many of these science activities are quick and easy to put together and will not break the bank either.

I divided the science fair project ideas out the best I could by topic and category for you. That way if there is a certain interest, you can find just what you are looking for. You will find science fair experiment ideas in biology, physics, chemistry, electricity, magnetism, earth science, and more!

All of these simple experiment ideas can be used in some way to create an awesome science fair project. Most are from my site, but many are from some other great bloggers! Click the links to get instructions and demonstrations on how these projects work.

Want more ideas? See also my post with 200 + Elementary STEM Projects .

Easy Energy and Physics Science Fair Projects

Kinetic Energy with Rubber Band Boats – this science project is a blast to create with kids!

Kinetic Energy- Shooting Star Spinner – This is a fun one on kinetic and potential energy

Kinetic Energy Gravity Spinner  – Do this experiment to show gravity!

Candle Seesaw Science STEM project

Perpetual Motion Candle See Saw – This is a cool way to learn about motion!

How Does a String Telephone Work?  ~Raising Life Long Learners

Which Cup Will Keep Water Cold the Longest?  ~ Really, Are you Serious?

Light Refraction Science Experiment  ~ Look We’re Learning

Heat Conduction Experiment  ~ Look We’re Learning

Color Changing Sensory Bottle  ~ The Science Kiddo

Exploring Magnetic Fields

Magnet Pendulum - STEM Experiment

Magnet Pendulum

Levitating Magnets

Train Chain Reactions

Static Electricity Slime

What are Electrolytes?

Color and Light Reflection and Refraction Experiments

Simple Machines- Gears

Light Box Magic  ~ True Aim Education

Balloon Air Pressure Experiment  ~ Darcy and Brian

Make A Giant Catapult

Technology & Mechanical Science Projects for Kids

Is it Conductive? – test different objects to see if they conduct electricity.

How to Make a Coin Battery  – use coins to power a light!

lemon battery science project for kids

How to Make a Lemon Battery – the power of lemon juice is pretty amazing.

What to Make a Dirt Battery – a battery out of dirt?  yup!

How do you Make a Potato Battery? ~from STEAM Powered Family

Story book STEM- Hydraulic Elevator science experiment

How to Make a Hydraulic Elevator ~ Make a water powered elevator

How to Make a Bubble Blower Machine

Paper Circuits – learn about circuits and electricity with this simple project.

Solar Powered Lego Car – harness the power of the sun!

Make an EASY Water Pump Sprinkler

Chemistry Science Projects for Kids With Chemical Reactions

Cabbage Juice pH Experiment – test different chemicals and substances to see their pH levels.

volcano science experiment for kids

How too Make an Erupting Volcano (with salt dough)

How Do you Clean Pennies?

Why Do Baking Soda and Vinegar React?

dry ice bubble science experiment

How to Make Dry Ice Bubbles

Does it Dissolve?

How Do you Grow Crystals? (borax crystals)

elephant toothpaste experiment for kids

Elephant Toothpaste with Two Types of Peroxide

What is Non-Newtonian Fluid?  (Oobleck Experiments)

Does it Rust? Oxidation Experiment

Rainbow Absorption

Film Canister Rockets

Blooming Paper Flowers experiment in Water

Blooming Paper Flowers

Dancing Acorns  ~ Hands-on Teaching Ideas

States of Matter Experiments – solids, liquids and gases

Rubber Bouncing Egg Experiment

Color Changing Flowers Experiment  ~ Messy Little Monster

Paper Burning Experiment  ~ Preschool Powol Packets

How to Make a Paper Mache Erupting Volcano  ~ Red Ted Art

Mentos and Soda Geysers

Anatomy Science Fair Projects

How Do Ears Work?

Human Anatomy with Play Dough

Play Dough Anatomy

Animal Digestion Experiment  ~ Schooling a Monkey

Why We Need Muscles & Bones  ~ I Can Teach My Child

How Do Lungs Work?   ~ Sciene Sparks

DNA Experiment

Earth Science and Nature Science Fair Projects

How do Earthquakes Happen ?

Can You Build a House to Resist an Earthquake?

Make your Own Crystal Rock Candy Geodes

Colored convection currents science experiment

What are Convection Currents?

Study surface tension with Water Strider Insects

How are Rainbows made?

How to Clean Dirty Water

Geology Experiment: Stalactites and Stalagmites Formation

testing water- science experiment

What’s In My Water? 

What are Shells Made of?

How Can We Stay Dry During the Rain  ~ Pink Stripey Socks

What Surfaces in my House are the Dirtiest? Mold Science

Density Experiment with different liquids, also tests buoyancy!

leaf chromatography science project for kids

Why Do Leaves Change Colors? Leaf Chromatography Experiment

Rising Tide Experiment

Soda Bottle Compost  ~ Busy Mommy Media

Build a Sun Shelter  ~ Buggy and Buddy

Hurricane Model Experiment  ~Preschool Powol Packets

Easy Condensation Experiment  – Look We’re Learning

Salt Water Density Experiment  ~ The Science Kiddo

Plant Science- Observing Bulb Growth  ~Buggy and Buddy

How to Make a Compass  ~ Parenting Chaos

Why do Pinecones Open & Close?  ~ Parenting Chaos

Leaf Transpiration science Experiment

Leaf Transpiration Experiment – how leaves breathe, use a plastic bag to collect the moisture from a tree.

Pumpkin Petri Dishes  ~ Hands-on Teaching Ideas

Rainy Day Science – learn about filtering rain water

Making a Solar Still – harness the power of the sun with this cool science experiment!

Make Your Own Human Sun Dial

How are Sedimentary Rocks & Fossils Made? 

How Do Sharks Float?  ~ Preschool Powol Packets

Square Bubbles

How to Make Square Bubbles

What Soil is Best for Growing Seeds?  ~ Schooling a Monkey

Simple Food Science Fair Project Ideas

Want a food-based science fair project?  These ideas are fun and edible, too!  Who doesn’t love learning with food?

Food Science: Make a Loaf of Bread in a Bag

Why Does Gelatin Not Set with Certain Fruits ?

What Foods will Grow the most Mold?

kitchen chemistry cake experiment

Cake Chemistry Experiment

Popcorn and Salt Science Experiment  ~ Awe Filled Homemaker

What Prevents Apples from Browning?

How to Make Plastic with Gelatin  ~ STEAM Powered Family

Melting Ice Science Experiment  ~ The Chaos and the Clutter

Pie Crust Experiment

Food Chemistry Turn Juice into Noodles! science experiment

Food Chemistry~ Turn Juice into Noodles !

Green Eggs Food Chemistry (no food coloring required!)

How Strong are Eggs?  ~ Hands-On Teaching Ideas

Make Solar S’mores

Hot Chocolate Science Experiment  ~ Creative Family Fun

Bread Mold Science Project  ~ Schooling a Monkey

Other Fun & Easy Science Project Ideas

Toilet Paper Comparisons   ~ Pink Stripey Socks

Egg Drop Challenge 

Press n’ Seal vs. Saran Wrap

Hockey Science Experiment  ~ Creative Family Fun

I hope you found an idea that will work for your little scientists next science fair project. I’d love to hear what you did and see pictures of the finished project!

Former school teacher turned homeschool mom of 4 kids. Loves creating awesome hands-on creative learning ideas to make learning engaging and memorable for all kids!

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Babble Dabble Do

30+ Science Fair Projects That Will Wow The Crowd

February 20, 2022 by Ana Dziengel Leave a Comment

Are your children signing up for the science fair this year? Have you begun the arduous task of looking for  science fair projects  that might pique your child’s interest? Or do you have a child who already has ten ideas they have been dying to try?

The science fair is a great school tradition and a memorable experience for many children (I still remember the life size plaster penguin I made in 5th grade), and if your school doesn’t conduct one, consider starting it!

This year if you are on the lookout for science fair projects I challenge you to think beyond the vinegar volcano (we have “Volcano Alley” at our school because there are so many volcano projects every year). I know, vinegar volcanoes are like a rite of childhood passage, but there are so many other amazing science ideas out there! I have compiled a list of 30+ science fair projects for kids based on their grade level below. Before we get started I wanted to share some tips for getting the most out of the science fair.

This post contains affiliate links.

Science Fair Tips

  • Don’t do the project for your child! This is my number one tip. Many parents have a tendency to jump in and make children’s work “more presentable” or to assist their child so much in the project that it’s hard to know who actually did it. Listen I get it, science is fun and you want your child to have a wonderful presentation…but that’s not really what the science fair is about. It’s about your child learning how to do scientific research and present their findings in their own way. Think of yourself as a helpful guide NOT an assistant, and definitely not the boss.
  • Choose something age  appropriate  When your child is choosing the science fair idea they want to try, make sure it’s age appropriate. Sure we’d all love to make a working robot but there’s nothing more frustrating than trying a project that may be too advanced for the skills of your child. And that’s when a lot of parents resort to doing the project instead. Not a good solution. So make sure your child is capable of completing the steps them self.
  • Make a list of three ideas Have your child select three science fair project ideas and then go over the choices with them. Make sure they understand the steps involved in each project and wether or not they feel comfortable in executing those steps on their own with your guidance.
  • Follow your child’s interests Encourage your children to explore some ideas based on interests they already have. Here’s a list of science books with projects based on things your child already loves!
  • STEAM it up! STEAM projects rock the science fair!!! A great way to get kids to become more familiar with STEAM concepts it to pick science projects that crossover into art, math, engineering and more!  Two STEAM books to consider are  STEAM Kids Play and Learn (my book!) and   STEAM Kids ebook.  Both books will get you started with some great ideas!
  • Read our Science Fair Mini Guide I created this mini guide to walk kids  through all the steps for completing their science fair project. You can check out the full guide here: 

Speak like a scientist! Science Vocabulary to use in your presentation

We’re almost ready to get to the projects! Before we begin, let’s review some science terms. In fact, using these terms in your science fair presentation will be sure to impress your friends and adults!

  • When you watch, see, or notice something you are making an observation
  • When you ask who, what, when, where, why, or how, you are forming a question  
  • When you read a book or an article about your observation, you are doing research
  • When you make a guess based on your observation, question, and research, you are forming a hypothesis
  • When you test your hypothesis, you are conducting an experiment
  • When you change one factor in your experiment at a time while keeping everything else the same, you are changing a variable
  • When you take notes in your journal and write down what you see happening in your experiment, you are logging data  
  • When you examine, or look at, your data, you are analyzing it
  • When you are able answer your question, you are coming to a conclusion

30+ Science Fair Projects for Kids 

Now let’s get on with the science fair projects! I have organized the projects by age/grade level. Click the titles to be taken to the project instructions, unless the instructions follow below.

If you’d rather have the science fair projects list organized by subject you can download our hyperlinked PDF by subscribing to our email list here .

Kindergarten-1st Grade Science Fair Projects

1.  lemon volcano.

Skip the vinegar volcano and try lemon juice! Kids will learn about the chemical reaction between citric acid and baking soda.

2. DIY Bouncy Balls

Learn about polymers while making a DIY toy!  This variation on slime uses a few simple ingredients. <span data-mce-type=”bookmark” style=”display: inline-block; width: 0px; overflow: hidden; line-height: 0;” class=”mce_SELRES_start”></span>

3. Shiny Pennies

A classic experiment that kids love is Shiny Pennies . Collect dirty tarnished pennies and have kids soak them for a minimum of 5 minutes in different acidic liquids. We used vinegar, salsa, lime juice, and lemon juice.  After soaking, remove them from the solution and rinse in soapy water then compare which ones are shiniest. Take notes on which acid worked best to shine the pennies. Variation: Don’t rinse all the pennies after removing them from the different liquids. Can you see a difference in the rinsed vs. non-rinsed pennies? Leave them overnight and see if any of the copper oxidizes (turns green) on the non-rinsed pennies.

pictured above: Regrowing vegetable scraps, DIY Stethoscope, Simple Circuit

4.  Regrow Vegetable Scraps

Did you know you can start an entire garden from vegetable scraps? It works indoors too!

5.  DIY Stethoscope

Make your own stethoscope from a few hardware store parts.

6.  Simple Circuit

For all tech centered kids: Learn how to make a very simple circuit from easy to find items.

pictured above: Chromatography Butterflies, Rainbow Rubber Eggs, Exploring Density with Salt

7. Chromatography 3 Ways

Chromatography is the process of separating mixtures, in this case we will be separating ink into different colors.

  • How to do the Classic Chromatography Project The simplest kids chromatography project using paper towels
  • Chromatography Art Turn chromatography strips into a woven paper art project!
  • Chromatography Butterflies Learn how to separate colors and create a sweet science based craft!

8. Exploring Density with Salt

Why don’t oil and water mix? Find out with this density experiment inspired by Lava Lamps!

9. Rainbow Rubber Eggs

Rubber eggs are another classic science project that kids love. And it’s so easy! I mean does dropping an egg in vinegar and coming back in a few days sound do-able?

2nd-4th grade Science Fair Projects

10. magic rollback can.

You just can’t get rid of this physics project! This project explores the difference between potential and kinetic energy. <span data-mce-type=”bookmark” style=”display: inline-block; width: 0px; overflow: hidden; line-height: 0;” class=”mce_SELRES_start”></span>

pictured above: Bleeding Blossoms, Teleidoscopes, Density Tower

11. Absorption 2 Ways

  • Bleeding Blossoms Explore capillary action and absorption in this science meets art project.
  • Magical Water Blossoms Make beautiful blossoming paper flowers with the help of absorption. This project has a simple wow moment that everyone enjoys watching.

12.  Teleidoscopes

A teleidoscope is a kaliedoscpe without an end. This means you can use it to view anything and everything. Look through one of these and you will be amazed!

13. Density Towers 2 Ways:

Yes, you can layer liquids on top of each other without them mixing! This is a classic project and kids can customize the liquids they choose to layer.

  • Simple Layered Liquids Learn how to make a simple density tower out of kitchen ingredients and then turn it into a lava lamp!
  • Glowing Density Tower This density tower has a bonus science surprise: it glows under UV light!

14.  Magnet Magic

Make a simple hanging magnet structure and explore the magic of magnetism.

pictured above: Chromatography Art, Dry Erase Figure, Overnight Crystals

15. Make a Lemon Battery and a Lime Light

Did you know that a chemical reaction can generate electricity?

16.  Electric Playdough

AKA Squishy Circuits, this project will demonstrate that salt and water conduct electricity!

17. Simple Sound Science

Explore the science of sound with these 4 experiments, then use your knowledge to make your own DIY instrument!

pictured above: Magnetic Sensory Bottle, Magical Plastic Bag, Cartesian Divers

18.  Magnetic Field Sensory Bottle

This will surely be a hit at the Science Fair! Watch metal particles dance and move under the influence of powerful magnets!

19.  Magical Plastic Bag Experiment

It’s not magic, it’s polymers! This easy science fair project uses a minimum of materials but demonstrates how everyday polymers work.

20.  Cartesian Divers

A classic science experiment exploring buoyancy. Make “diver” swim up and down in a bottle using science.

21. Water Drop Microscope

Did you know you can make simple microscope from a plastic bottle and water? This project teaches kids to turn trash into a science tool!

22. Spinning Tops

Learn about centrifugal force and friction with one of these three spinning tops ideas!

  • Spin Art Tops
  • Spin-finite Tops
  • Perler Bead Tops

23. Kinetic Sculpture

Make you own moving sculpture while learning about cams and gears!

<span data-mce-type=”bookmark” style=”display: inline-block; width: 0px; overflow: hidden; line-height: 0;” class=”mce_SELRES_start”></span>

Science Fair Projects for 5th Grade and up

pictured above: Crystal landscapes, Tiny Dancers, Coffee Can Camera Obscura

24. Crystals 3 Ways:

  • Overnight Crystals Grow Epsom salt crystals overnight in your refrigerator.
  • Crystal Wind Catchers Borax crystals are SUPER easy to grow! Turn them into a lovely dangling wind catcher.
  • Crystal Landscapes A more advanced crystal growing experiment using bluing and salt but WOW, these are gorgeous!

25.  Tiny Dancers

These are actually a very simple motor! Kids will learn about electromagnetism by building this motor that can “dance.”

26.  Coffee Can Camera Obscura

Make a simple camera obscura out of an old coffee can.

pictured above: Heat Sensitive Slime, Levitating Pen

27. Heat Sensitive Slime

Click your slime chemistry up a notch by adding in thermochromic paint!

28.  Levitating Pen

Make a pen appear to levitate using a magnet!

29.  Newton’s Cradle

Featured on Dude Perfect! I made one of these for the science fair back in the 1980’s…This science “toy” is mesmerizing for kids and adults alike!

pictured above: Electromagnetic Train, Fake Lung, Articulated Hand

30.  Electromagnetic Train

Incredible display of electricity and magnetism!

31.  Fake Lung

For kids interested in life science and biology, make a model of how our lungs work for the science fair.

32.  Articulated Hand

Another one for biology oriented kids, explore how our joints move by creating an articulated hand.

33. Salty Circuits

In this simple circuit project, kids will create an electrical circuit using salt to conduct electricity and power a light emitting diode (LED).

Are you ready for the science fair?

Whether your child has never participated in the science fair or is an old pro, I hope the science fair projects here will inspire them to have fun, explore science, and get creative the same time.

And if you still need MORE ideas I also have a giant list of chemistry projects for kids that would make amazing science fair starter projects!

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50 of the Best Science Fair Project Ideas for Kids

By andy minshew.

  • February 10, 2021

So you have a science fair coming up at school and want to make a project that’s sure to win a prize ribbon? Well, you’ve come to the right place. Choosing the right project requires plenty of research. That’s why we’ve rounded up the best science fair projects ideas to help you along your search.

50 STEM Experiment Ideas for Kids

These 50 science fair project ideas are all great for kids- early and older elementary school students, with a few suitable for middle school students as well. Make a topic that fascinates you, come up with a hypothesis, and see what happens next!

Plus, once you’ve chosen your topic, use this science fair project how-to video from NASA as a helpful guide.

Important note: Some of these science fair projects require the help or supervision of an adult. Always make sure an older family member is nearby and knows what you’re doing as you work on these projects.

1. With this science fair experiment , you can learn what factors affect melting ice.

2. Try this magic milk experiment for an easy science fair project that younger students can accomplish.

3. How much sun does a seed need to sprout? Discover the answer by trying this project you can easily complete from home.

4. Build your own water clock and see how well you can get it to measure time.

5. If you’re interested in a little microbiology, try out this egg cell experiment .

6. What’s the best way to prevent apples from browning? Find out for yourself and make sure to record the results.

7. Do birds eat more food if it is a certain color? Find out with this intriguing experiment .

8. Discover how clouds turn water vapors into rain and diagram a few common types of clouds through this kid-friendly science fair project .

9. Make your own plant cell model using styrofoam and playdough.

10. Learn about aerodynamics by experimenting with paper airplane shapes and seeing which one flies best.

11. Learn how to accelerate the rusting process with this quick and thought-provoking science project .

12. Want to learn about water and density for your project? Perform this floating egg experiment and try out the follow-up questions at the bottom.

13. This project about bending light is perfect for older elementary school students who want to dip their toes into physics.

14. This biology-based science experiment asks, “Will plants grow towards a specific light source?”

15. Learn about greenhouse gases with this science fair idea .

16. Experiment with what makes fruit ripen quickly and write down your results to present at your science fair.

17. Use this hands-on experiment to explore how carbonated drinks affect teeth.

18. Which factors affect evaporation? Find out for yourself with this project that’s perfect for students who can complete it with a little adult supervision.

19. Find out which types of toothpaste work the best and, after measuring your results, try and come up with a conclusion.

20. If the weather is warm out during your science fair, try building a solar oven .

21. For a simple chemistry project , you can make sugar crystals and see what material works best for growing them.

22. Which common material is the best heat conductor? Find out with this science fair project that can be done with adult supervision, as it needs boiling water.

23. Craft your own thermos bottle and test it out for a project all about insulation.

24. Make a DIY thermometer and test it out for a practical and hands-on science project.

25. Try this celery experiment to learn how plant capillaries work.

26. How does the air temperature affect movement? Try one of these fun science fair project ideas as a model for your own experiment.

27. If you’re passionate about the environment, try this recycling experiment for your science fair project

28. How does paint color affect drying time? Make your predictions and test it out for yourself.

29. Learn which soil is best for growing tomatoes if your science fair takes place during warm weather.

30. Build your own lemon battery and see if you can get it to work to learn about electricity.

31. If you want to try the epitome of science fair projects, try making a science fair volcano.

32. How much sugar is in different popular foods? If you’re interested in health science, try this fascinating experiment .

33. If you’d rather look at prompts and create your own project, use these science fair questions for inspiration.

34. Does music affect plant growth? Discover for yourself with this project .

35. Do you need science fair project ideas that will encourage others to recycle? Learn about how to make your own paper .

36. If you have a few furry friends in your neighborhood, consider testing if dogs are colorblind with this project .

37. How does temperature affect air pressure in a ball? Find out the answer with this sporty science project .

38. Build your own pulley and see what kinds of objects you can make it carry.

39. Learn a little about chemistry with this science fair experiment that asks which paper towels are the most absorbent.

40. What is the dirtiest spot in the average home? Find the answer by cultivating bacteria growth in this experiment .

41. Discover how to test thermal energy by observing water temperature.

42. Can you grow seeds with liquids other than water? Find out with this kid-friendly science experiment .

43. This Sun or Shade science fair projec t is perfect for elementary school students.

44. This cool science fair project asks an intriguing question about insect biology: what sweetener do ants prefer?

45. Make a working model of lungs for a science fair project that’s sure to fascinate.

46. Want to try a science fair project that can only end with tasty treats? Bake some cookies and try one of these sweet experiments .

47. Interested in astronomy? Try out this experiment that teaches why the moon’s shape seems to change every day.

48. What are the effects of disinfectant on germs? Use this science fair project as inspiration for your own.

49. Put your math skills to the test with this science fair project centered around the game tic tac toe.

50. What’s stronger: magnetism or gravity? Find out with this science fair experiment that’s perfect for early elementary students.

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Chemistry Science Fair Project Ideas

Tips and Topics to Consider

Erik Isakson / Getty Images 

  • Projects & Experiments
  • Chemical Laws
  • Periodic Table
  • Scientific Method
  • Biochemistry
  • Physical Chemistry
  • Medical Chemistry
  • Chemistry In Everyday Life
  • Famous Chemists
  • Activities for Kids
  • Abbreviations & Acronyms
  • Weather & Climate
  • Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
  • B.A., Physics and Mathematics, Hastings College

The best chemistry science fair project is one that answers a question or solves a problem. It can be challenging to come up with a project idea, but looking at a list of chemistry projects other people have done may stimulate a similar idea for you. Or, you can take an idea and think of a new approach to the problem or question.

Tips for Finding a Good Idea for Your Chemistry Project

  • Write out your project idea in the form of a hypothesis as per the scientific method. If you can, come up with five to 10 hypothesis statements and work with the one that makes the most sense.
  • Keep in mind how much time you have to complete the project, so don't select a science project that takes months to complete if you only have a few weeks. Remember, it takes time to analyze data and prepare your report. It's also possible that your experiment won't work out as planned, which would require you to develop an alternative project. A good rule of thumb is to choose an idea that takes less than half the total time you have.
  • Don't discount an idea just because it doesn't seem to fit your educational level. Many projects can be made simpler or more complex to fit your level.
  • Keep your budget and materials in mind. Great science doesn't have to cost a lot. Also, some materials might not be readily available where you live.
  • Consider the season. For example, while a crystal-growing project might work well under dry winter conditions, it might be hard to get crystals to grow during a humid rainy season. And a project involving seed germination may work better in the spring and summer (when seeds are fresh and sunlight is favorable) than in late autumn or winter.
  • Don't be afraid to ask for help. Parents, teachers, and other students can help you fine-tune a science fair project idea.
  • Follow rules and regulations. If you aren't allowed to use live animals, don't choose an animal project. If you won't have access to electricity, don't pick a project that requires an outlet. A bit of planning can save you from disappointment.

Examples of Good Chemistry Project Ideas

The following is a list of interesting, inexpensive science fair project ideas. Consider the different scientific approaches you can take to answer each question.

  • Can you use a  black light  to detect invisible spills or smelly stains in carpeting or elsewhere in the house? Can you predict what types of materials will glow under a black light?
  • Will chilling an onion before cutting it  keep you from crying ?
  • Does catnip repel cockroaches better than DEET?
  • What ratio of vinegar to  baking soda  produces the best chemical volcano eruption?
  • What fabric fiber results in the brightest tie-dye?
  • What type of plastic wrap prevents evaporation the best?
  • What plastic wrap prevents oxidation the best?
  • Which brand of diaper absorbs the most liquid?
  • What percentage of an orange is water?
  • Are night insects attracted to lamps because of heat or light?
  • Can you make Jello using fresh pineapples instead of canned pineapples ?
  • Do white candles burn at a different rate than colored candles?
  • Does the presence of detergent in water affect plant growth?
  • What type of car antifreeze is safest for the environment?
  • Do different brands of orange juice contain different  levels of vitamin C ?
  • Does the level of vitamin C in orange juice change over time?
  • Does the level of vitamin C in orange juice change after the container is opened?
  • Can a saturated solution of sodium chloride still dissolve Epsom salts?
  • How effective are  natural mosquito repellents ?
  • Does magnetism affect the growth of plants?
  • Do oranges gain or lose  vitamin C  after being picked?
  • How does the shape of an ice cube affect how quickly it melts?
  • How does sugar concentration vary in different brands of apple juices?
  • Does storage temperature affect the pH of juice?
  • Does the presence of cigarette smoke affect the growth rate of plants?
  • Do different brands of popcorn leave different amounts of unpopped kernels?
  • How do differences in surfaces affect the adhesion of tape?

Chemistry Science Fair Project Ideas by Topic

You can also brainstorm for your project by looking into topics that interest you. Click on the links to find project ideas based on subject matter.

  • Acids, Bases, and pH : These are chemistry projects relating to acidity and alkalinity, mostly aimed at the middle school and high school levels.
  • Caffeine : Are coffee or tea your thing? These projects relate mostly to experiments with caffeinated beverages, including energy drinks.
  • Crystals : Crystals can be considered geology, physical science, or chemistry. Topics range in level from grade school to college.
  • Environmental Science : Environmental science projects cover ecology, assessing environmental health and finding ways to solve relevant problems.
  • Fire, Candles, and Combustion : Explore combustion science. Because fire is involved, these projects are best for higher grade levels.
  • Food and Cooking Chemistry : There is a lot of science involving food. Plus, it's a research subject everyone can access.
  • Green Chemistry : Green chemistry seeks to minimize the environmental impact of chemistry. It's a good topic for middle and high school students.
  • Household Project Testing : Researching household products is accessible and easily relatable, making it an interesting science fair topic for students who might not ordinarily enjoy science.
  • Magnets and Magnetism : Explore magnetism and compare different types of magnets.
  • Materials : Materials science can relate to engineering, geology, or chemistry. There are even biological materials that can be used for projects.
  • Plant and Soil Chemistry : Plant and soil science projects often require a bit more time than other projects, but all students have access to the materials.
  • Plastics and Polymers : Plastics and polymers aren't as complicated and confusing as you might think. These projects may be considered a branch of chemistry.
  • Pollution : Explore sources of pollution and different ways to prevent or control it.
  • Salt and Sugar : Salt and sugar are two ingredients anyone should be able to find, and there are many ways to explore these common household items.
  • Sports Physics and Chemistry : Sports science projects may be attractive to students who don't see how science relates to everyday life. These projects may be of particular interest to athletes.

Science Fair Projects by Grade Level

For level-specific project ideas, this list of resources is broken down by grade.

  • Quick Look at Project Ideas by Educational Level
  • Elementary School Science Fair Projects
  • Middle School Science Fair Projects
  • High School Science Fair Projects
  • College Science Fair Projects
  • Tenth Grade Science Fair Projects
  • Ninth Grade Science Fair Projects
  • Eighth Grade Science Fair Projects
  • Seventh Grade Science Fair Projects
  • Sixth Grade Science Fair Projects
  • Fifth Grade Science Fair Projects
  • Fourth Grade Science Fair Projects
  • Third Grade Science Fair Projects
  • 8th Grade Science Fair Project Ideas
  • Middle School Science Fair Project Ideas
  • Questions for Each Level of Bloom's Taxonomy
  • 6th Grade Science Fair Projects
  • Plant and Soil Chemistry Science Projects
  • 9th Grade Science Fair Projects
  • 10th Grade Science Fair Projects
  • Household Product Testing Science Fair Projects
  • Acid & Base Science Fair Project Ideas
  • 7th Grade Science Fair Projects
  • Pollution Science Fair Projects
  • Science Fair Project Ideas for 12th Graders
  • 11th Grade Science Fair Projects

Image that reads Space Place and links to spaceplace.nasa.gov.

Do a Science Fair Project!

How do you do a science fair project.

Cartoon of boy and girl doing experiment with small containers on table.

Ask a parent, teacher, or other adult to help you research the topic and find out how to do a science fair project about it.

Test, answer, or show?

Your science fair project may do one of three things:

Test an idea (or hypothesis.)

Answer a question.

Show how nature works.

Topic ideas:

Space topics:.

How do the constellations change in the night sky over different periods of time?

How does the number of stars visible in the sky change from place to place because of light pollution?

Learn about and demonstrate the ancient method of parallax to measure the distance to an object, such as stars and planets.

Study different types of stars and explain different ways they end their life cycles.

Earth topics:

Cross-section drawing of ocean at mouth 9of a river, with heavier saltwater slipping in under the fresh water.

How do the phases of the Moon correspond to the changing tides?

Demonstrate what causes the phases of the Moon?

How does the tilt of Earth’s axis create seasons throughout the year?

How do weather conditions (temperature, humidity) affect how fast a puddle evaporates?

How salty is the ocean?

Solar system topics:

Drawing of the solar system.

How does the size of a meteorite relate to the size of the crater it makes when it hits Earth?

How does the phase of the Moon affect the number of stars visible in the sky?

Show how a planet’s distance from the Sun affects its temperature.

Sun topics:

Observe and record changes in the number and placement of sun spots over several days. DO NOT look directly at the Sun!

Make a sundial and explain how it works.

Show why the Moon and the Sun appear to be the same size in the sky.

How effective are automobile sunshades?

Study and explain the life space of the sun relative to other stars.

Drawing of a science fair project display.

Pick a topic.

Try to find out what people already know about it.

State a hypothesis related to the topic. That is, make a cause-and-effect-statement that you can test using the scientific method .

Explain something.

Make a plan to observe something.

Design and carry out your research, keeping careful records of everything you do or see.

Create an exhibit or display to show and explain to others what you hoped to test (if you had a hypothesis) or what question you wanted to answer, what you did, what your data showed, and your conclusions.

Write a short report that also states the same things as the exhibit or display, and also gives the sources of your initial background research.

Practice describing your project and results, so you will be ready for visitors to your exhibit at the science fair.

Follow these steps to a successful science fair entry!

If you liked this, you may like:

Illustration of a game controller that links to the Space Place Games menu.

science-fair-projects-5th-grade

Science fair can be the highlight of your child’s 5th grade school year. We have rounded up 31 great fifth grade science fair ideas to get you started! With one previous science fair behind his or her belt, your 5th grader is now ready for a little more challenge.

In this post, we’ve assembled 31 easy science fair project ideas for 5th grade. We link each project description to its original source, where you can get more information and step-by-step instructions.

tornado-in-a-bottle-science-fair-project-5th-grade

Tornado in a Bottle

In this fascinating experiment, water will create a channel as it is emptied from a bottle. A device connecting the two bottles allows the water to empty into a second bottle.

Recommended for Grade 5.

Source: www.scinado.com

effects-of-temperature-science-fair-project-5th-grade

Effects of Temperature on the Sublimation of Dry Ice & How Soap Reacts in the Microwave

Two projects in one! Testing how temperature affects two different solids: dry ice and soap.

Source: GlobalPost.com

dominant-side-of-brain-science-fair-project-5th-grade-6th-grade

Do People Have a Dominant Side of Their Brain?

These experiments will help the scientist to determine if people have a dominant hand, foot, eye or ear. A great behavioral discovery project.

Recommended for Grades 5-6.

Source: www.faculty.washington.edu

when-life-gives-you-lemons-make-a-battery-science-fair-project-4th-grade-5th-grade

When life gives you lemons, make a battery!

Lemon Power is a fascinating experiment that you can attempt to duplicate with other fruit. Which fruit makes the best battery? Experiment and find out!

Recommended for Grades 4-5.

Source: www.kidsactivitiesblog.com

science-fair-project-on-tooth-decay-4th-grade-5th-grade

A Science Fair Project on Tooth Decay by Jennifer Elrod

Doing an experiment on tooth decay is both beneficial and interesting. It only requires a few inexpensive materials and a week’s worth of observation and record keeping. The experiment requires no work after the initial setup.

Source: www.ehow.com

homemade-lava-lamp-science-fair-project-4th-grade

Homemade Lava Lamp by Alexa Bach McElrone

This project takes about 2 hours to complete the experiment and the write-up. Kids will get to explore the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

Source: http://www.education.com

how-light-affects-germination-and-growth-science-fair-project-4th-grade

How the Amount of Light Affects Germination and Growth.

The goal of the project is to find out how different lighting conditions affect seeds germination and growth. This article will give you the step by step procedure for this project.

Source: www.scienceprojectlab.com

growing-bacteria-in-petri-dishes-science-fair-project-4th-grade-5th-grade

Growing Bacteria in Petri Dishes by Steve Spangler

A Petri dish prepared with nutrient agar (a seaweed derivative with beef nutrients) is an ideal food source for the bacteria you’ll be growing. Collect samples from around the house or classroom and record the results for the one with the most bacteria.

Source: www.stevespanglerscience.com

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Bridge Project by Sarah Benton

This project explores the basic physics of bridges. The goal is that the student will develop an understanding through experimentation of which shapes are the most structurally strong, and that many factors are taken into account in engineering and building.

Source: www.education.com

paper-airplane-science-fair-project-4th-grade-5th-grade

Paper Airplane Science Fair Project

Create your own hypothesis about paper airplanes, then start your experiment. This article gives you all of the information you need.

Source: www.easy-science-fair-projects.net

barometer-science-fair-project-4th-grade-5th-grade

Barometer Science Project

Make your own barometer and then use it to test weather conditions on a dry day, a rainy day, a cloudy day, etc.

Source: www.hubpages.com

how-do-antacids-work-science-fair-project-4th-grade-5th-grade

How Do Antacids Work?

In this activity, learners explore the chemical reaction between water and effervescent antacid tablets. This hands-on activity models how a material can act differently when it’s nanometer-sized. Learners compare the reaction rate of an effervescent antacid tablet that is broken in half with one that is broken into many pieces.

Source: www.howtosmile.org

gummy-bear-osmosis-science-fair-project-4th-grade-5th-grade

Gummy Bear Osmosis

Do Gummy Bears dissolve in water? In vinegar? In liquid soap? Test your hypothesis on a variety of liquids and find out.

Source: www.homeschool.com

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Is Your Dog’s Mouth Cleaner than Your Mouth?

Is it a myth or fact that a dog’s mouth has less germs that a human’s mouth? Follow these simply instructions and test for yourself.

does-mint-actually-cool-things-down-science-fair-project-4th-grade-5th-grade

Does Mint Actually Cool Things Down? By Jennifer Penn-Chiu

Mint-flavored gum, breath fresheners, and hard candies often advertise that mint has a cooling effect, and use images of frost and ice to demonstrate this sensation. But is this sensation a result of the mint actually lowering temperatures?

which-food-will-rot-first-science-fair-project-4th-grade-5th-grade

Which Food Will Rot First?

This example tests the rotting of 4 different foods, but your scientist can test as many different types of food as they can imagine.

Source: www.notimeforflashcards.com

helmet-crash-test-science-fair-project-4th-grade-5th-grade

Helmet Crash Test by Steve Spangler

Not only will your little scientist gain a better appreciation for using a helmet, she can also learn more about the science behind it. Try testing different size melons and different height drops.

Source: www.parenting.com

can-magnets-affect-growth-process-of-radishes-science-fair-project-4th-grade-5th-grade

Can Magnets Affect the Growth Process of Radish?

In this experiment, your scientist will determine whether magnets make radish plants grow faster or slower.

Source: www.buzzle.com

playground-teeter-totter-science-fair-project-4th-grade-5th-grade

Playground Teeter-Totter

The goal of this project is to create a compound machine using pulleys and levers that would be able to lift a Barbie doll up and down by pulling a string by the player. A common problem on the playground is that you sometimes can’t find another person to go on the teeter totter with you.

Recommended for Grades 4-6.

Source: www.projects.juliantrubin.com

growing-mold-garden-science-fair-project-4th-grade-5th-grade

Growing a “Mold Garden”

The goal of this project is to grow different mold species on different kind of substrates to find out if the same bread mold species will grow on all of them. Do all mold species have the same taste and preferences?!

Recommended for Grades 4-5

Source; www.scienceprojectlab.com

making-a-sundial-science-fair-project-4th-grade-5th-grade

Making a Simple Sundial and Testing Its Accuracy

Learn how to make a sundial and then test its accuracy with a series of experiments.

Recommended for Grades 4-6

Source: www.explorable.com

a-pint-pot-planet-science-fair-project-4th-grade-5th-grade

A Pint Pot Planet

This experiment will demonstrate the water cycle and test different hypotheses on rainfall and the water cycle.

Source: www.raisingsparks.com

build-a-paper-bridge-science-fair-project-4th-grade-5th-grade

Build and Test a Paper Bridge

This project helps you discover how to create a strong bridge using just paper. Instructions also offer some additional parameters to add into the experiment.

Recommended for grades 4-5

Source: www.teacherstryscience.org

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Paper Airplane Experiment

Experiment to find the best design for a paper airplane

Source: ScienceFairMath

use-energy-in-peanut-science-fair-project-4th-grade-5th-grade-6th-grade

Use the Energy in a Peanut to Heat Water

Just about everything has potential energy stored in it. The problem is releasing that energy to be able to do some work.

A tiny peanut contains stored chemical energy. When we eat them, the stored energy is converted by our bodies so we can do work. We can also use the energy in a peanut to heat a container of water.

Recommended for grades 4-6

Source: www.energyquest.ca.gov

exploring-oil-spills-science-fair-project-4th-grade-5th-grade-6th-grade

Oil Spill Experiment

This experiment will demonstrate the detrimental effects of oil spills to marine life

make-your-microscope-with-water-science-fair-project-4th-grade-5th-grade-6th-grade

Make Your Own Microscope with Water

Make a simple microscope using water and take a closer look at the world around you.

The lens you create with water works like a microscope or magnifying glass, allowing you to see objects in much greater detail than if you were just looking with the naked eye.

Source:  www.sciencekids.co.nz

effect-of-pH-on-type-of-plants-science-fair-project-5th-grade-6th-grade

How Does the pH of the Soil Affect the Type of Plants?

Plants’ survival can be based on the pH of the soil. This experiment lets you test soil pH based on the type of plants that live there.

Source: www.livescience.com

surface-tension-experiment-science-fair-project-5th-grade-6th-grade

Surface Tension Experiment

Surface tension is one of water’s most important properties. It is the reason that water collects in drops, but it is also why water can travel up a plant stem, or get to your cells through the smallest blood vessels. You can experiment with surface tension using just a few household items.

Source: www.hometrainingtools.com

computer-password-strength-science-fair-project-5th-grade-6th-grade

STEAMsational

100+ Science Fair Project Ideas for Grades 2nd-8th

Even though science is meant to be exploratory and exciting, there is something about being judged at a science fair that strikes fear into the heart of students and parents alike.

Suddenly, what you do in science is *graded,* which means you can fail science?

Of course there is no such thing as a failed science experiment, but if your students or children are participating in a science fair this year, you’ll find this list of creative and easy science fair project ideas will help eliminate much of the stress surrounding science fair planning.

Over 100 science fair projects ideas for elementary through middle school! Kids in 2nd-8th grade will love these easy science fair projects.

Easy and Fun Science Fair Project Ideas that Kids will Adore!

You don’t have to stress about attending the school science fair! These science fair project ideas will be adored by kids from age 7 through age 14.

Keep reading to learn more about science projects and how to ensure students are maximizing their science project potential.

What is a Science Fair Project?

A science fair is a longstanding tradition that many elementary, middle, and high schools have where students conduct scientific research and share their presentations before judging.

A science fair project should include all of the following elements before entering a science fair:

  • Background research
  • Bibliography and source list
  • A question to answer and a hypothesis to test
  • Experiment variables
  • Data recording and analysis of the experiment
  • Conclusion report
  • Visual presentation

If your science fair project includes all of these elements, you are well on your way toward a winning science fair project idea!

What Do Kids Learn Doing Science Fairs?

Kids who do science projects report greater confidence and understanding of all scientific concepts, both in what they explored and the scientific process in general.

Learning to analyze and explore data helps children approach other tasks in a logical, straightforward process which helps improve study skills and communication skills.

One of the greatest values that science fair projects bring is the ability to identify problems and work toward a solution. That is an invaluable skill that kids can use throughout life.

Of course, kids learn the basics of whatever scientific concept they are learning, plus the scientific method, which involved:

  • Analyzing and Recording Data

But more than that, kids also learn other valuable skills like:

  • Presenting an idea
  • Creating a presentation
  • Organizing data
  • Analyzing data
  • Patience and orderliness
  • Working with others
  • Precision and care
  • Adapting to changes
  • Communication skills

These skills are important far beyond the classroom!

What You Need for a Science Fair

You’ll want to have these supplies on hand before doing your science fair project. Shop the included Amazon storefronts to make things easier and don’t forget to download the free science fair planning checklist before getting started!

science fair display board example

Science Fair Project Planning

When you’re planning your project, you want to keep everything organized. Click the image below to get my free science fair project checklist so you can start organizing your project from the start.

You may also want to check out this list of science fair project research supplies.

Supplies for a Science Fair Project

There are so many supplies for science fair projects that are individual to each project, but if you want a general list of possible supplies and inspiration for your project, check out my selection of science fair experiment supplies on Amazon.

Supplies for a Science Fair Presentation

Your science fair presentation is important! It should look presentable and eye-catching. Check out this list of my favorite science fair presentation supplies.

Print a lot of papers? Get $10 your HP Instant Ink order when you use this link.

The Ultimate List of Easy Science Fair Project Ideas

These science fair project ideas are easy for kids of all ages and will provide a lot of value and interest at the school science fair.

We have science fair projects included by topic and by grade level so you can pick the right sort of projects for your class or child.

Science Fair Topics

Sometimes kids want to start with a topic and choose a science fair project from there! Here is a collection of fun science projects that include a variety of topics from colors to mold.

Here are some fun science projects for kids at home that would make a good addition to any science fair.

Of course every kid should try some of these classic science fair projects .

Now some schools are having STEM fairs in addition to or instead of science fairs, so these slime STEM fair projects would be perfect.

These slime science projects will capture the attention of any slime lover.

Try these science fair projects with LEGOs with kids who can’t get enough of LEGO.

Fun and tasty candy science fair projects will help even science haters enjoy the science fair.

Want more color in your science fair? Try these science experiments with food coloring !

Learn about the heart with these heart science projects .

Some kids can’t sit still, and these science fair projects for active kids are for them!

What kid wouldn’t have tons of fun doing marshmallow science fair projects ?

Children will love the variety of choices in this list of crystal science fair projects .

More Science Fair Experiment Ideas

You will love these other science experiment ideas!

100 Science Experiments for Kids that Use Materials You Already Own!

20 Fun Science Experiments with LEGOs

25 Rainbow Science Experiments with Bright and Beautiful Colors

Science Fair Projects by Grade

Age-appropriate activities are a must for keeping children interested in science fairs. Take a look at the resources I’ve collected below that show science fair projects that are suitable for elementary kids and middle school kids!

Take a look at the resources I've collected below that show science fair projects that are suitable for every grade from preschool through 8th grade!

If you are part of an elementary science fair, these elementary science fair project ideas will blow away the competition!

If you want to get seasonal, check out these Easter science projects for middle school.

Share this project with a friend!

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Every time you read about doing an experiment or starting a science fair project, it always says you need a hypothesis.  How do you write a hypothesis?  What is it?  How do you come up with a good hypothesis?

 

 

 

of Your Favorite Company!

What is a hypothesis?

No.  A hypothesis is sometimes described as an educated guess.  That's not the same thing as a guess and not really a good description of a hypothesis either.  Let's try working through an example.

If you put an ice cube on a plate and place it on the table, what will happen?  A very young child might guess that it will still be there in a couple of hours.  Most people would agree with the hypothesis that:

An ice cube will melt in less than 30 minutes.

You could put sit and watch the ice cube melt and think you've proved a hypothesis.  But you will have missed some important steps.

For a good science fair project you need to do quite a bit of research before any experimenting.  Start by finding some information about how and why water melts.  You could read a book, do a bit of Google searching, or even ask an expert.  For our example, you could learn about how temperature and air pressure can change the state of water.  Don't forget that elevation above sea level changes air pressure too.

Now, using all your research, try to restate that hypothesis.

An ice cube will melt in less than 30 minutes in a room at sea level with a temperature of 20C or 68F.

But wait a minute.  What is the ice made from?  What if the ice cube was made from salt water, or you sprinkled salt on a regular ice cube?  Time for some more research.  Would adding salt make a difference?  Turns out it does.  Would other chemicals change the melting time?

Using this new information, let's try that hypothesis again.

An ice cube made with tap water will melt in less than 30 minutes in a room at sea level with a temperature of 20C or 68F.

Does that seem like an educated guess?  No, it sounds like you are stating the obvious.

At this point, it is obvious only because of your research.  You haven't actually done the experiment.  Now it's time to run the experiment to support the hypothesis.

A hypothesis isn't an educated guess.  It is a tentative explanation for an observation, phenomenon, or scientific problem that can be tested by further investigation.

Once you do the experiment and find out if it supports the hypothesis, it becomes part of scientific theory.

Notes to Parents:

  • Every parent must use their own judgment in choosing which activities are safe for their own children.  While Science Kids at Home makes every effort to provide activity ideas that are safe and fun for children it is your responsibility to choose the activities that are safe in your own home.
  • Science Kids at Home has checked the external web links on this page that we created.  We believe these links provide interesting information that is appropriate for kids.  However, the internet is a constantly changing place and these links may not work or the external web site may have changed.  We also have no control over the "Ads by Google" links, but these should be related to kids science and crafts.  You are responsible for supervising your own children.  If you ever find a link that you feel is inappropriate, please let us know.

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Kids' Coding Corner | Create & Learn

15 Cool Science Fair Projects

Create & Learn Team

Hoping to enter a science fair for kids but not sure where to begin? The purpose of science fair projects are about more than simply coming up with a cool idea and sharing it with others.

Aside from the competitive glory of competing (and maybe winning) at a science fair, kids gain experience working with the scientific method: asking questions, forming hypotheses, testing, collecting data, and sharing results with others. Aside from these fundamental STEM skills, kids also gain valuable experience in collaboration, organizational skills, problem solving, communication, and creativity, turning that cool science fair project into a stepping stone on the path towards a career in science.

Join live online, small-group science classes led by an expert, to learn new skills to give you all sorts of science project ideas, including in Quantum Frontiers , NASA Science , Smart Devices , and Minecraft Redstone Engineering .

Discover cool science fair projects

In this list, we will share some awesome ideas for students and educators to get inspired and to make a project that will leave a lasting impression. Of course, there’s a huge gap between a beginner’s project and that of a competitive high schooler, but we have arranged it so you can easily find something for young explorers of all ages.

Explore the best science fair projects for elementary kids

While classic projects like making a cyclone in a bottle or stacking liquids to teach density can make a lasting impact on kids, these projects offer some unique ways of getting elementary schoolers to engage with science.

1. LEGO Zipline

Kids love LEGO and this project only requires a few blocks and some lengths of string. Projects can teach kids about Physics concepts like gravity, tension, friction, as well as Math ideas like slope, angle, and weight. Set a large slope to make the zip line fast, and add slack to the line to slow it down. You could even arrange this project as a race.

2. Slow Ball Race

Another race idea involves building a tower of ramps to allow a ball to roll down. To give your students a unique challenge, instead of making the ball rush to the bottom, you can have them compete to see who makes the ball reach the bottom slowest. All you need are some building materials (paper, cardboard, or plastic) and a ball, ideally something small and smooth like a ping pong ball.

3. Hot/Cold Water Density Project

For this project, students will only need some clear containers of the same size, hot and cold water and food coloring. Students will study the characteristics of water and how its density changes based on temperature. By adding one color to the cold and another to the hot, students then will stack the openings on top of each other, and if done correctly, the different temperature liquids will remain separate. Pretty cool.

4. Soil Erosion in a Bottle

This simple project requires garden soil, some plants with roots in the soil, and three clear soda bottles. After cutting out the side of each bottle, they will then be filled with different materials. In one bottle there will be simple soil, in another the soil could be mixed with rocks, branches, and other large chunks. In the final bottle, students will plant some flowers, whose roots will prevent the soil from eroding. As water is poured through the others, students will witness how plants help preserve and retain our most precious resource: the Earth.

5. Water Filtration

In another climate science project, students will use a variety of materials to experiment with water filtration. By pouring dirty water through a mix of sand, charcoal, rocks, and debris, students can collect the filtered water and demonstrate how clean it is by passing through the filter. This could be a supplement to conversations about the water cycle.

See the best science fair project ideas for middle school kids

Middle schoolers will be able to do more independent projects, and they should have a higher bar for formulating a hypothesis and repeatedly testing it. By analyzing the data in a group, students can improve their verbal reasoning skills in a team.

6. Seed Sprouting Experiment

With some seeds and some containers filled with various growing media (sand, soil, mulch, compost, etc.), students can test which material is ideal for sprouting seeds. Students can also study ideas of sustainability, food security, and climate change/soil erosion as part of their project.

7. Newton’s Balloon Car

“For every action there is an equal and opposite reaction,” is one of the most famous quotes in science and engineering, and one of Sir Isaac Newton’s most famous Laws of the physical world. Middle school students can experience this law first hand by building a toy car that propels itself with the expelled air of an inflated balloon. Kids love this experiment because it can be presented as a race.

8. Geodesic Domes

The geodesic dome joins the arch as one of the strongest physical structures in architecture and engineering. Students can test different materials and design strategies to build a dome that supports as much load as possible. Maybe teams can try to build a structure that carries the load of a human being!

9. The Greenhouse Effect

All students need for this experiment are a jar, some cellophane wrap, a thermometer, and a sunny window. If you want, students can opt for a heat lamp as well. By covering one jar and leaving one uncovered, this experiment can demonstrate in miniature how the atmosphere captures heat and warms the planet. This of course is a perfect experiment to introduce younger kids about the fundamentals of weather and climate science.

10. Coding in LEGO

As Computer Science plays a huge role in shaping the technologies kids love (Did someone say ‘video games’?), no age is too young to learn about coding and computer science concepts like algorithms, loops, functions, and Binary. In these exciting games, students combine their LEGO creation skills to build an algorithm that can be played like a game, using binary to help a LEGO figurine move through a LEGO environment. LEGO was one of our favorite toys as a kid, and this would be an amazing chance to get kids excited about coding early.

To learn beginner-friendly coding with the help of a live expert, join our free Scratch class:

Check out the best science fair projects for high school students

High school science fair projects should be sophisticated and nuanced in their design, analysis, and reporting. Since science fairs can be an important part of getting scholarships and advanced academic placements, high schoolers should be challenged to do college level work in their projects, and hopefully these ideas will help them find something.

11. Enzymes, Yeast, and Cheesemaking

Say Cheese! No, seriously, who doesn’t love cheese? Well, actually the science says that most people are at least a little bit lactose intolerant, but that shouldn’t stop aspiring chefs and chemists from trying out this cool project where students try to use cheesemaking kits to test the chemistry behind this delicious cheese. Kits like the one below are available online and contain not only the materials to make cheese, but also guidelines to build a proper science experiment.

12. Robotics

There has never been a better time to become a robotics scientist. (Seriously, check out the history of robotics !) With the advent of semiconductors, advanced circuits, and tools like 3-D printers and tiny Raspberry Pi computers, students can build a robot from the ground up to solve everyday problems, to interact with humans or nature, to complete human tasks, or to simply tell a story. The possibilities are endless!

To learn more about robotics with the help of a purposeful curriculum and live expert, join our award-winning robotics class.

13. Raspberry Pi

Did we mention Raspberry Pi? Do you want to build your own computer from the circuit board up? These cool little computers are a lot more powerful than their size makes it seem. Students can customize their circuits to build a video-streaming device, a musical instrument like a synthesizer or a drum machine, or a game. There's a bunch of models out there for different budgets or for different purposes, so students should begin with an idea or something they want to do before buying one.

14. Bioassay for Toxicity

In this type of experiment students can test crops for resiliency against drought, flood, or other extreme weather conditions. Students could test to see what level of salt in the soil is ideal for growing crops, and at what point does the salt become toxic? Environmental engineering is a major part in the fight against climate change, and we need scientists to propose solutions to ensure greater food security in the future.

15. Electrolytes in Various Liquids

Is it better to drink sports drinks or a glass of water after a period of exercise? Many products are sold on the promise of delivering electrolytes to help the body recover, but are sports drinks better than a simple glass of orange juice? Using an electrically charged wire, students can test the levels of electrolytes in liquids to both study chemistry and nutrition science in one project.

Bonus. Coding Projects

Now is a great time to learn how to code software. Students have a limitless supply of resources on the Internet, and learning how to do proper Internet research is a fundamental skill for academic success. Students will work in a programming environment like Scratch or Python to build a unique project such as a game to demonstrate their understanding of variables , algorithms , loops , functions, and other CS fundamentals. This project suggests building a program in Python that tests the hackability and strength of passwords.

Enjoy the best science fair project ideas

So that’s our list so far, but there’s a lot of great ideas out there for students heading to their first science fair in elementary school or competing at the national level against the best students in the country. Whether young or old, these projects can turn the key and get kids excited about learning in STEM . Whatever you choose, try to make it stand out by making it your own!

Written by Bryan Gordon, a Create & Learn instructor. After ten years of working as an English teacher, Bryan began studying Math and Computer Science over the past few years. Aside from writing and teaching, he likes cooking, gardening, playing guitar, and hanging out with his cats, Baguette and Wally.

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Hypothesis Examples

Hypothesis Examples

A hypothesis is a prediction of the outcome of a test. It forms the basis for designing an experiment in the scientific method . A good hypothesis is testable, meaning it makes a prediction you can check with observation or experimentation. Here are different hypothesis examples.

Null Hypothesis Examples

The null hypothesis (H 0 ) is also known as the zero-difference or no-difference hypothesis. It predicts that changing one variable ( independent variable ) will have no effect on the variable being measured ( dependent variable ). Here are null hypothesis examples:

  • Plant growth is unaffected by temperature.
  • If you increase temperature, then solubility of salt will increase.
  • Incidence of skin cancer is unrelated to ultraviolet light exposure.
  • All brands of light bulb last equally long.
  • Cats have no preference for the color of cat food.
  • All daisies have the same number of petals.

Sometimes the null hypothesis shows there is a suspected correlation between two variables. For example, if you think plant growth is affected by temperature, you state the null hypothesis: “Plant growth is not affected by temperature.” Why do you do this, rather than say “If you change temperature, plant growth will be affected”? The answer is because it’s easier applying a statistical test that shows, with a high level of confidence, a null hypothesis is correct or incorrect.

Research Hypothesis Examples

A research hypothesis (H 1 ) is a type of hypothesis used to design an experiment. This type of hypothesis is often written as an if-then statement because it’s easy identifying the independent and dependent variables and seeing how one affects the other. If-then statements explore cause and effect. In other cases, the hypothesis shows a correlation between two variables. Here are some research hypothesis examples:

  • If you leave the lights on, then it takes longer for people to fall asleep.
  • If you refrigerate apples, they last longer before going bad.
  • If you keep the curtains closed, then you need less electricity to heat or cool the house (the electric bill is lower).
  • If you leave a bucket of water uncovered, then it evaporates more quickly.
  • Goldfish lose their color if they are not exposed to light.
  • Workers who take vacations are more productive than those who never take time off.

Is It Okay to Disprove a Hypothesis?

Yes! You may even choose to write your hypothesis in such a way that it can be disproved because it’s easier to prove a statement is wrong than to prove it is right. In other cases, if your prediction is incorrect, that doesn’t mean the science is bad. Revising a hypothesis is common. It demonstrates you learned something you did not know before you conducted the experiment.

Test yourself with a Scientific Method Quiz .

  • Mellenbergh, G.J. (2008). Chapter 8: Research designs: Testing of research hypotheses. In H.J. Adèr & G.J. Mellenbergh (eds.), Advising on Research Methods: A Consultant’s Companion . Huizen, The Netherlands: Johannes van Kessel Publishing.
  • Popper, Karl R. (1959). The Logic of Scientific Discovery . Hutchinson & Co. ISBN 3-1614-8410-X.
  • Schick, Theodore; Vaughn, Lewis (2002). How to think about weird things: critical thinking for a New Age . Boston: McGraw-Hill Higher Education. ISBN 0-7674-2048-9.
  • Tobi, Hilde; Kampen, Jarl K. (2018). “Research design: the methodology for interdisciplinary research framework”. Quality & Quantity . 52 (3): 1209–1225. doi: 10.1007/s11135-017-0513-8

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120+ Exciting 5th Grade Science Project Ideas With Hypothesis In 2023

5th Grade Science Project Ideas With Hypothesis

Are you ready to embark on an exciting journey into the world of 5th-grade science projects with hypotheses? Science projects are not just about fun experiments; they also involve forming hypotheses to make educated guesses about outcomes. But what makes a good hypothesis for a science project? In this blog, we’ll explore the key components of a successful hypothesis.

Selecting the right 5th-grade science project can be a challenge, and we’ll share some valuable tips to help you choose the perfect one. We’ll dive into the importance of combining hypothesis with your science project and why it’s a vital aspect of learning and discovery.

But that’s not all! We’ve also compiled an extensive list of 120+ exciting 5th-grade science project ideas with hypothesis, providing you with a wealth of inspiration for your next scientific adventure. Stay tuned with us to unleash the world of  5th-grade science project ideas with hypothesis  and nurture your curiosity in the process.

What Is A Good Hypothesis For A Science Project?

Table of Contents

A good hypothesis for a science project is like a smart guess. It helps scientists figure out what they think will happen in their experiment. To make a good hypothesis, you need to use words like  if  and  then.  For example,  If I water the plant every day, then it will grow taller.  This shows what you’re going to do and what you expect to see.

In addition, a strong hypothesis also needs to be testable. That means you can experiment to see if it’s true or not. It’s like a detective’s clue that leads you to find the answer. Scientists use good hypotheses to guide their experiments and learn new things about the world. So, making a good hypothesis is an important part of any science project.

Things To Remember While Selecting A 5th Grade Science Project Ideas With Hypothesis

Here are some things to remember while selecting a 5th grade science project ideas with hypothesis:

1. Personal Interest

Choose a 5th-grade science project that interests you. Picking a topic you’re curious about makes the project more enjoyable. Whether it’s plants, animals, or space, your passion can make learning fun.

2. Age-Appropriate

Make sure the project is right for your grade level. A 5th-grade project shouldn’t be too simple or too complex. It should match your skills and what you’ve learned in school.

3. Available Resources

Check if you have access to the materials you need. Some projects might need special tools or expensive stuff. It’s essential to choose something you can do with the materials you have.

4. Safety First

Keep safety in mind. Select a project that’s safe to do at home or in school. Make sure you won’t be using anything harmful or dangerous.

5. Clear Instructions

Look for a project with clear instructions. It’s easier when you know what to do step by step. Projects with easy-to-follow directions help you succeed and learn better.

Developing A Hypothesis For Your Science Project

Developing a hypothesis for your science project is a crucial step. It’s like making an educated guess about what you think will happen during your experiment. Here are seven key points to consider while creating a hypothesis:

  • Identify the Variables: Determine the two things you’re testing in your experiment, the  if  and  then  parts. For example, if you’re testing plant growth, the variables could be  amount of sunlight  and  plant height. 
  • Be Specific: Make sure your hypothesis is clear and precise. Avoid vague or broad statements. The more specific, the better.
  • Predict the Outcome: Your hypothesis should state what you expect to happen. Will one variable cause a change in the other? State your prediction clearly.
  • Use  If-Then  Statements : Craft your hypothesis using  if-then  statements to show the relationship between the variables. For instance,  If the amount of sunlight increases, then the plant height will also increase. 
  • Keep It Testable: Ensure that your hypothesis is something you can test through an experiment. It should lead to concrete results that you can measure.
  • Avoid Bias: Make sure your hypothesis doesn’t show your personal beliefs. It should be based on research and evidence, not what you want to happen.
  • Revisit and Revise : As you conduct your experiment, be ready to adjust your hypothesis if the results don’t match your initial prediction. Science is all about learning and adapting.

Here we have a list of 120+ exciting 5th grade science project ideas with hypothesis in 2023: 

  • Balloon Rocket

Hypothesis –   If I inflate a balloon and release it, then it will move forward because of the escaping air. 

  • Moldy Bread

Hypothesis –  I think bread left in different conditions will develop mold at varying rates. 

  • Growing Plants 

Hypothesis –   If I give plants different amounts of water, then they will grow differently. 

  • Magnet Magic

Hypothesis –  I predict that magnets will attract some objects but not others. 

  • Lemon Battery

Hypothesis –  I believe I can create a battery using a lemon because it is acidic. 

  • Volcano Eruption

Hypothesis –   I expect that a mixture of vinegar and baking soda will create a volcanic eruption. 

  • Density of Liquids

Hypothesis –   I think different liquids have different densities, and some will float on top of others. 

  • Solar Still

Hypothesis –   I predict that a solar still can collect clean water from dirty water through evaporation. 

  • Bouncing Balls

Hypothesis –   I believe that balls made from different materials will bounce to different heights. 

  • Static Electricity

Hypothesis –   I think rubbing a balloon on my hair will create static electricity that attracts objects. 

  • Fruit Battery

Hypothesis –  I expect that fruits like oranges and lemons can power a small light bulb. 

  • Color-Changing Milk

Hypothesis –  I predict that adding soap to milk with food coloring will make colorful patterns. 

  • Tornado in a Bottle

 Hypothesis –   I think that by swirling water and dish soap in a bottle, I can create a tornado-like vortex. 

  • Water Filtration

Hypothesis –   I believe that by using sand and gravel, I can filter impurities from water. 

  • Rust Formation

Hypothesis –  I predict that metal objects left in water will rust over time. 

  • Candy Dissolving

Hypothesis –  I think that different candies will dissolve at different rates in water. 

  • Seed Germination

Hypothesis –  If I plant seeds in various conditions, then they will sprout at different rates. 

Hypothesis –  I expect that by using a simple rain gauge, I can measure rainfall accurately. 

  • Sound Vibrations

Hypothesis –   I believe that different objects will produce different sounds when struck. 

  • Egg Drop Challenge

Hypothesis –   I predict that if I design a protective container, the egg will survive a fall. 

  • Paper Airplanes

Hypothesis –   I think that altering the shape of paper airplanes will affect their flight distance. 

  • Food Preservation

 Hypothesis –   I expect that different methods of food preservation will keep food fresh longer. 

  • Homemade Slime

Hypothesis –  I believe that mixing glue and borax will create a slimy substance. 

Hypothesis –   I predict that combining oil and water with Alka-Seltzer will create a mesmerizing lava lamp effect. 

  • Air Pressure

Hypothesis –   I think air pressure can be measured with a simple barometer. 

  • Crystal Growth

Hypothesis –  I expect that I can grow crystals by dissolving substances in water. 

  • Ocean Currents

Hypothesis –   I predict that hot water and cold water will create ocean currents in a container. 

  • Rainbow in a Jar

Hypothesis –   I believe I can create a rainbow by layering different liquids with different densities. 

  • Static Electricity Levitation

Hypothesis –  I think that static electricity can make a small object levitate. 

  • Melting Ice

Hypothesis –   I predict that adding salt to ice will cause it to melt faster. 

  • Potato Battery

Hypothesis –   I expect that a potato can conduct electricity and power a small device. 

  • Pendulum Swing

Hypothesis –   I believe that the length of a pendulum will affect its swing time. 

  • Soda Geyser

Hypothesis –   I predict that dropping Mentos candies into soda will create a geyser. 

  • Chromatography

Hypothesis –  I think I can separate the colors in markers using chromatography. 

  • Heat Transfer

Hypothesis –  I expect that different materials will transfer heat at varying rates. 

  • Rainfall and Runoff

Hypothesis –   I predict that if I simulate rainfall on different surfaces, some will produce more runoff. 

  • Fizzy Lemonade

Hypothesis –   I believe that combining lemon juice and baking soda will make lemonade fizzier. 

  • Rock Identification

Hypothesis –  I think I can identify different rocks by their characteristics. 

Hypothesis –  I predict that by cutting a straw, I can make it produce musical sounds like an oboe. 

  • Taste Perception

Hypothesis –   I expect that people’s taste perception may change when their sense of smell is altered. 

  • Color-Changing Flowers

Hypothesis –   I believe that adding food coloring to water will change the color of white flowers. 

  • Solar Cooker

Hypothesis –   I predict that a solar cooker can cook food using only the sun’s energy. 

  • Tornado Formation

Hypothesis –  I think that rotating two bottles will create a tornado effect. 

  • Vinegar and Baking Soda Rocket

Hypothesis –  I expect that mixing vinegar and baking soda in a bottle will launch it into the air. 

  • Popsicle Stick Bridge

Hypothesis –  I predict that I can build a strong bridge using only popsicle sticks and glue. 

  • Rainfall Patterns

Hypothesis –  I believe that rainfall patterns can be different in various parts of the world. 

  • Chemical Reactions

Hypothesis –  I think mixing certain chemicals will result in a visible reaction. 

  • Fruit Decomposition

Hypothesis –   I predict that different fruits will decompose at different rates. 

  • Balancing Act

Hypothesis –  I expect that I can balance various objects on a pivot point. 

  • Photosynthesis Simulation

Hypothesis –   I believe that using a simple setup, I can show how plants perform photosynthesis. 

  • Sinking and Floating

Hypothesis –  I think that objects with different densities will either sink or float in water. 

  • Tooth Decay

Hypothesis –  I predict that different liquids will affect teeth differently, simulating tooth decay. 

  • Rainwater Collection

Hypothesis –   I expect that by using a funnel, I can collect rainwater efficiently. 

  • Soundproofing

Hypothesis –  I think that different materials will block sound to varying degrees. 

  • Egg in a Bottle

Hypothesis –   I predict that I can place a peeled hard-boiled egg into a bottle without breaking it.  

  • Water Wheel

Hypothesis –   I believe that the flow of water can make a small wheel turn.  

  • Invisible Ink

Hypothesis –   I expect that I can create invisible ink that reveals messages under certain conditions.  

  •  Heat from the Sun

Hypothesis –   I predict that a dark-colored object will get hotter in the sun than a light-colored one.  

  • Layered Liquids

Hypothesis –   I think that liquids of different densities will form layers when mixed.  

  • Candle Burning

Hypothesis –   I predict that different types of candles will burn at different rates.  

  • Buoyancy with Clay Boats

Hypothesis –   I believe I can make clay boats that float and carry small loads.  

Hypothesis –   I expect that a mixture of cornstarch and water will behave strangely, like a liquid and a solid.  

  • Magnetic Slime

Hypothesis –   I predict that adding iron filings to slime will make it magnetic.  

  • Stalactites and Stalagmites

Hypothesis –   I think I can grow stalactites and stalagmites using a simple solution.  

Hypothesis –   I expect that different substances will have varying pH levels, which can be tested with indicator paper.  

  • Solar Still for Drinking Water

Hypothesis –   I believe that a solar still can produce clean drinking water from saltwater.  

Hypothesis –   I predict that I can create a sundial that tells time using the sun’s shadow.  

  • Dissolving Sugar

Hypothesis –   I expect that sugar will dissolve faster in hot water than in cold water.  

  • Balloon Inflator

Hypothesis –   I think that a chemical reaction in a bottle can inflate a balloon.  

  • Baking Soda and Vinegar Boat

Hypothesis –   I predict that a boat made from materials like baking soda and vinegar will move.  

  • Oil Spill Cleanup

Hypothesis –   I believe that using different materials can help clean up an oil spill in water.  

  • Seed Dispersal

Hypothesis –   I predict that seeds can be dispersed in various ways, such as by wind or animals.  

  • Lemonade Sweetness

Hypothesis –   I expect that lemonade sweetness can be adjusted by adding sugar in different amounts.  

  • Density of Solids

Hypothesis –   I think different solid objects will have different densities, which can be measured.  

  • Making Ice Cream

Hypothesis –   I predict that I can make ice cream by mxing ingredients and using ice and salt.  

  • Conduction and Insulation

Hypothesis –   I believe that different materials will either conduct or insulate heat.  

  • Centrifugal Force

Hypothesis –   I predict that spinning an object will create a centrifugal force that affects its path.  

  • Balloon-Powered Car

Hypothesis –   I expect that a car powered by a balloon will move because of the escaping air.  

  • Candle Extinguisher

Hypothesis –   I think that covering a candle with a glass will extinguish it by using up the oxygen inside.  

  • Water Filter Comparison

Hypothesis –   I predict that different water filters will remove impurities to varying degrees.  

  • Capillary Action

Hypothesis –   I expect that water will rise differently in materials with varying capillary action.  

  • Static Electricity and Salt

Hypothesis –   I believe that salt can be moved with static electricity.  

  • Food Coloring in Flowers

Hypothesis –   I predict that adding food coloring to water will change the color of flowers.  

  • Bottle Trombone

Hypothesis –   I think I can make a simple trombone-like instrument using a plastic bottle.  

  • Windmill Power

Hypothesis –   I expect that a windmill can generate power when exposed to wind.  

  • Chewing Gum Flavor

Hypothesis –   I predict that the flavor of chewing gum changes over time as it’s chewed.  

  • Yeast Balloons

Hypothesis –   I believe that yeast will produce gas that can inflate a balloon.  

  • Water Wheel Efficiency

Hypothesis –   I think that the design of a water wheel affects its efficiency in generating power.  

  • Simple Electric Circuit

Hypothesis –   I expect that I can make a light bulb glow by completing an electric circuit.  

  • Sugar Crystal Lollipop

Hypothesis –   I predict that sugar crystals will grow on a string dipped in a sugary solution.  

  • Temperature and Magnetism

Hypothesis –   I believe that magnets will behave differently at various temperatures.  

  • Styrofoam and Acetone

Hypothesis –   I expect that acetone will dissolve styrofoam.  

  • Starch in Foods

Hypothesis –   I think I can test for the presence of starch in different foods using iodine.  

  • Balloon-Powered Boat

Hypothesis –   I predict that a boat powered by a balloon will move on water.  

  • Melting Chocolate

Hypothesis –   I expect that chocolate will melt at different rates when heated.  

  • Air Pollution and Plant Growth

Hypothesis –   I believe that exposing plants to air pollution will affect their growth.  

  • Simple Motor

Hypothesis –   I predict that I can build a simple motor that turns when an electric current flows through it.  

  • Lemon Battery Voltage

Hypothesis –   I expect that different fruits will produce varying amounts of electricity when used as batteries.  

  • Fireworks in a Jar

Hypothesis –   I think that mixing oil and colored water will create a fireworks-like display in a jar.  

  • Bending Water with Static Electricity

Hypothesis –   I predict that static electricity can bend a stream of water from a faucet.  

  • Soda Can Fizz

Hypothesis –   I expect that dropping a mentos candy into a soda can will cause fizzing.  

  • Tornado Tube

Hypothesis –   I believe that connecting two plastic bottles with a tornado tube will create a vortex.  

  • Magnetic Attraction and Distance

Hypothesis –   I predict that magnets will attract objects from varying distances.  

  • Heat Absorption by Colors

Hypothesis –   I think that objects of different colors will absorb heat differently under sunlight.  

  • Lemon Battery Power

Hypothesis –   I expect that a lemon battery can power a small LED light.  

  • Strawberry DNA Extraction

Hypothesis –   I believe I can extract DNA from strawberries using common household items.  

  • Marshmallow Density

Hypothesis –   I predict that marshmallows of different shapes and sizes have different densities.  

  • Balloon-Powered Windmill

Hypothesis –   I think a windmill with balloons will turn when exposed to air.  

  • Spinning Colors

Hypothesis –   I expect that spinning a color wheel will create the illusion of blending colors.  

  • Sound and Vibration

Hypothesis –   I predict that different objects will create different sounds when struck and vibrate differently.  

  • Rock Erosion

Hypothesis –   I believe that different rocks will erode at varying rates when exposed to water.  

  • Air Pressure and Crushed Can

Hypothesis –   I expect that changing air pressure will crush an empty can.  

  • Straw Flute

Hypothesis –   I think that cutting and blowing through a straw can produce musical notes.  

  • Bottle Rocket

Hypothesis –   I predict that a bottle rocket filled with water and pressurized air will launch into the air.  

  • Fruit Electricity

Hypothesis –   I believe that different fruits can produce electricity using simple circuits.  

  • Melting Snow and Ice

Hypothesis –   I expect that different substances can help melt snow and ice at varying rates.  

  • Plant Growth in Different Soils

Hypothesis –   I think that different soils will affect the growth of plants differently.  

  • Static Electricity and Salt and Pepper

Hypothesis –   I predict that salt and pepper can be moved with static electricity.  

  • Floating Paperclip

Hypothesis –   I expect that surface tension can make a paperclip float on water.  

  • Crayon Melt Art

Hypothesis –   I believe that crayons will melt and create art when heated.  

  • Balloon-Powered Hovercraft

Hypothesis –   I predict that a hovercraft powered by balloons will glide over a smooth surface.  

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Importance Of 5th Grade Science Project Ideas With Hypothesis For Students 

In this section, we will discuss the importance of 5th grade science project ideas with hypothesis for students: 

1. Hands-On Learning

5th-grade science projects with hypotheses offer students a chance to learn through doing. They get to experiment, make predictions, and see the real-world results. This hands-on approach helps students grasp scientific concepts better.

2. Critical Thinking

These projects encourage critical thinking. Students have to come up with educated guesses (hypotheses) and then analyze their experiments’ outcomes. It teaches them to think logically and solve problems.

3. Curiosity and Exploration

Science projects fuel curiosity. They allow students to explore topics they find interesting, making learning more engaging. This curiosity can spark a lifelong interest in science.

4. Application of Knowledge

The things that students have learned in school can be used in real life. It helps them understand that science is not just in books, but all around them. This makes their education more useful.

5. Confidence Building

Successfully completing a science project with a hypothesis can boost a student’s confidence. They see that they can tackle challenging tasks and find solutions. This confidence can extend to other areas of their education and life.

Understanding what makes a good hypothesis is the first step in any 5th-grade science project with a hypothesis. It’s all about making educated guesses and having clear  if-then  statements. Remember to choose a project that matches your interest, is safe, and fits your grade level. With over 120 exciting 5th-grade science project ideas with hypothesis, you have a world of possibilities to explore. 

Moreover, these projects offer hands-on learning, boost critical thinking, and ignite curiosity. They let you apply what you’ve learned in school to real life. Completing these projects can build your confidence, showing that you can tackle challenges and make discoveries. So, dive into the world of 5th-grade science project ideas with hypothesis and start your exciting scientific journey!

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50 Sensational 7th Grade Science Fair Projects and Classroom Activities

Mummification, oxidation, electroplating, and more!

Collage of 7th grade science projects, including Oreo mitosis models and electroplating a coin

Engage every student with these 7th grade science fair projects, whether they’re interested in biology, chemistry, physics, environmental science, or any other discipline. Plus, find interesting classroom demos, experiments, and hands-on activities to spice up your lesson plans!

To make it easier to find classroom activities or science fair ideas for 7th grade, we’ve rated all the projects by difficulty and the materials needed:

Difficulty:

  • Easy: Low or no-prep experiments you can do pretty much anytime
  • Medium: These take a little more setup or a longer time to complete
  • Advanced: Experiments like these take a fairly big commitment of time or effort
  • Basic: Simple items you probably already have around the house
  • Medium: Items that you might not already have but are easy to get your hands on
  • Advanced: These require specialized or more expensive supplies to complete

Biology and Ecology Science Fair Ideas for 7th Grade

Chemistry science fair ideas for 7th grade, physics and engineering science fair ideas for 7th grade, 7th grade science classroom demos, experiments, and hands-on activities.

Want to learn more about animals or human behavior, the environment around you, or other life science topics? Try these 7th grade science fair projects.

Learn whether color affects memory

A tablet and smartphone with screens showing text

Difficulty: Easy / Materials: Medium

Can certain colors improve your memory? This experiment explores that idea using different text, background colors, and blue light settings on devices.

Learn more: Colors and Memory at Education.com

Explore how sugary drinks affect teeth

Four colored cups containing different liquids, with an egg in each

The calcium content of eggshells makes them a great stand-in for teeth. In this experiment, students use eggs to determine how soda and juice stain the teeth and wear down the enamel. (Bonus: Have students try different toothpaste and toothbrush combinations to see how effective they are.)

Learn more: Eggshell Experiment at Feels Like Home

Extract DNA from an onion

Difficulty: Medium / Materials: Medium

Learn how to extract DNA from an onion (most of what you need you can find at home, and you can get 95% ethanol at Amazon ). Then, turn it into an experiment by applying the theory to other fruits or vegetables to see if you can get similar results.

Stretch your mind with a flexibility experiment

Three students lying on their backs stretching one leg in the air while another student stands nearby

Difficulty: Medium / Materials: Basic

Find out how important stretching really is by comparing the flexibility of willing test subjects before and after stretch exercises. This is a great experiment for fitness fans.

Learn more: Flexibility Experiment at We Have Kids

Construct a DIY grow box

DIY plant grow box made with aluminum foil

Design a grow box using a cardboard box, foil, and a plug-in light socket . Then, use it for all kinds of plant-based science fair ideas for 7th grade students.

Learn more: DIY Grow Box at Uplifting Mayhem

Collect and control biofilm

Two plastic milk jugs sitting by a sink, covered with green film

Bacteria that accumulate on objects in the water form a substance called biofilm. In this 7th grade science fair project, students build an apparatus to collect biofilm and then experiment with ways to reduce the amount of biofilm that accumulates over time.

Learn more: Biofilm Experiment at The Homeschool Scientist

See if caffeine helps you type faster

People seek out a jolt of caffeine when they’re feeling sluggish, but does it really help them perform better? This 7th grade science fair project tasks students with answering that question using the scientific method.

Find out if all plants are phototropic

You probably already know that many plants grow toward the light. But do all of them respond in the same way? Test several types of plants to find out.

Devise a water filtration system

Bottle of powdered activated charcoal next to two jars of colored water

Plenty of homes use water filtration systems these days, but how do they really work? This chemistry experiment explores how charcoal filters impurities from drinking water.

Learn more: Water Filtration at The Homeschool Scientist

Determine whether text abbreviations are a new language

Cell phone and notebook with list of texting terms

Kids are fluent in text-speak, but does it really count as a whole new language? In this 7th grade science fair project, students research language and the history of texting, then compile a texting glossary and consider texting’s practical applications.

Learn more: Text Language at Education.com

If you’re fascinated by test tubes, beakers, and Bunsen burners, check out these interesting 7th grade science fair projects and ideas.

Design your own slime

Chances are good your students already love making and playing with slime. Turn the fun into an experiment by changing the ingredients to create slime with a variety of properties, from magnetic to glow-in-the-dark!

Copper-plate some coins

9 volt battery with electric wires running to a penny, with a cup of blue liquid

Students need just a few simple supplies to perform electroplating, but the results are always impressive. (Get copper strips  and 9V battery snap connectors with alligator clips on Amazon.) Turn this into a 7th grade science fair project by changing up the variables (does temperature matter?) or items being electroplated.

Learn more: Electroplating at KiwiCo

Swab and test for germs

Petri dishes marked floor, fridge, sink, and more, each showing some bacterial growth

Germ experiments are one of the most popular science fair ideas for 7th grade students. Swab household items, school supplies, and more to discover what’s living on the items around you.

Learn more: Germ Experiment at Angelic Scalliwags

Spherify your favorite beverage

Spherification is a hot trend in top restaurants, but 7th grade science students can easily replicate it at home with a spherification kit . This is a cool chemistry experiment, and tasty too!

Test calorie counts in packaged foods

Ever wonder how scientists determine how many calories are in your food? Try this experiment to find out!

Explore mummification

First, learn how to mummify a hot dog using baking soda as a desiccant. Then, experiment with other desiccants or items to turn this into a bona fide experiment.

Play around with oxidation

Series of paper cups containing small items like a penny, paper clip, screw, and more

Can you find a way to slow or prevent oxidation (rusting)? This is one of those 7th grade science fair ideas that’s simple in concept but has lots of practical applications.

Learn more: Oxidation Experiment at Teach Beside Me

Blow hot or cold bubbles

Frozen soap bubble on snowy branches

Blowing bubbles may sound like too much fun for a science project, but when conditions like temperature are altered, the experimental part kicks in. What conditions do you need to blow a bubble that freezes?

Learn more:  Bubble Life & Temperature at ThoughtCo.

Whip up some eggshell chalk

Pink sidewalk chalk stick sitting on a paper towel

Use the calcium in eggshells to make your own sidewalk chalk. Then, tinker with the recipe to see if you can make the chalk last longer, resist water, or other variables.

Learn more: DIY Chalk at Kidspot

See the effect of acid rain on plants

Two white tulips in glasses of water. One is healthy and one is wilted.

Difficulty: Easy / Materials: Basic

This simple project tests whether acid rain has any effect on plant life, using vinegar in place of fossil fuels. Experiment with different acid concentrations and pH levels for a more advanced version.

Learn more: Acid Rain Experiment at STEAM Powered Family

Explore the laws of motion, the science of energy, or STEM challenge engineering ideas through 7th grade science fair projects like these.

Drive a balloon-powered car

Balloon-powered car made from cardboard (Seventh Grade Science)

Engineer a balloon-powered car using basic materials from around the house (even the wheels are bottle caps!). Experiment to see how far or fast you can make the car go.

Learn more: Balloon Car at Prolab

Construct a geodesic dome

Budding engineers will love designing, building, and testing the strength of the fascinating geodesic dome. This experiment requires nothing more than newspaper and masking tape!

Design a solar oven

Pizza boxed turned into a solar oven, propped open with graham crackers, chocolate, and marshmallows inside

Students experiment with the best way to build a solar oven, exploring thermal energy, reflection, convection, and other physics concepts. They can serve up their experiment results along with their final reports!

Learn more: Solar Oven at Children’s Science Center

Lend a helping hand

This is a great individual or group 7th grade science project, as it encourages students to use and hone their design and engineering skills to make a working model of a hand. If you’ve got robotics skills, take this project to a more advanced level.

Build a Da Vinci bridge

There are plenty of bridge-building experiments out there, but this one is unique. It’s inspired by Leonardo da Vinci’s 500-year-old self-supporting wooden bridge. Build a model and test the amount of weight it can hold, or craft a full-size version to put Da Vinci’s plan into action.

Construct a water clock

Several small bowls next to a water clock made from a jar of water, styrofoam cup, wood craft stock, and jingle bell

You’ll blow your 7th grade science students’ minds when you tell them they’re going to build a clock using engineering that’s been around for thousands of years. The supplies are simple, but the results are pretty neat!

Learn more: Water Clock at STEAM Powered Family

Generate electricity

In this science fair project, kids build a generator from scratch. Turn it into an experiment by varying the materials to see if you can increase the amount of energy it produces.

Test the elasticity of balloons

Explore whether heat and cold have an effect on elasticity using balloons. Try this with other materials too to expand the project. ( Find more balloon science here! )

Freeze water in an instant

Explore the concept of nucleation (the process of chain reactions) by turning water into ice in seconds! Make this a 7th grade science fair project by trying the same process with other liquids.

Auto-feed your pet

Difficulty: Advanced / Materials: Advanced

Can you build a device that feeds your pets automatically? Even better, can you make it inexpensive and easy for others to build too? This project has real practical applications.

Use these classroom activities to teach human biology, mechanical engineering, and more physics and chemistry concepts in engaging and exciting ways.

Use Oreos to teach mitosis

Two Oreo cookies opened up and pushed together to model cell mitosis

A 7th grade science activity that doubles as a sweet treat? Your students are going to love this activity using Oreo cookies and colorful sprinkles to make cellular mitosis models.

Learn more: Oreo Mitosis at Ballin With Balling

Twist pipe cleaners to explore meiosis

Cellular meiosis model made with pipe cleaners, beads, and string

Meiosis is similar to mitosis, but it’s specific to the production of gametes. These hands-on models use basic materials like pipe cleaners and beads to make the process easier to visualize.

Learn more: Meiosis Models at Science Prof Online

Teach about “Homer-o-stasis”

Ring stand with a plastic cup and a picture of Homer Simpson, with various chemicals, colored cups, and a bin of flour

Difficulty: Medium / Materials: Advanced

This is such a fun way to teach kids about the concept of homeostasis! Get all the instructions you need at the link.

Learn more: Homer-o-stasis at The Trendy Science Teacher

Sort jelly beans to learn genetics

Jellybeans sorted into two plastic cups labeled

If you’re learning about how genetic traits are passed along from parent to child, try this jelly-bean demo. When you’re finished, you can enjoy a sweet treat!

Learn more: Jelly Bean Genetics at The Owl Teacher

Design a pinball machine

Student-created pinball machine made from cardboard box, paper cups, and other basic supplies

Give your class basic supplies like rubber bands, plastic cups, and cardboard boxes. Then challenge them to create their very own pinball machines!

Learn more: Pinball STEM Challenge at Student Savvy

Conduct a carbon cycle lab activity

Series of test tubes filled with liquid ranging from yellow to green to blue

If you’ve got access to some basic chemicals, conduct this lab that helps students see the carbon cycle in action using their own breath.

Learn more: Science Lessons That Rock

Make a tea bag float on air

Three empty teabags burning

This easy experiment is a cool way to show kids how heat affects air molecules, making hot air rise. They’ll need some supervision with the fire, so try this out on the playground for extra safety.

Learn more: Floating Tea Bags at Coffee Cups and Crayons

Learn how salt affects density

Plastic cups labeled

Explore the salinity of various bodies of water, then re-create their waters to see if you can make an egg float or sink. Experiment with other objects too.

Learn more: Saltwater Density at Uplifting Mayhem

Watch the greenhouse effect in action

Glass jar with a thermometer inside, covered with plastic wrap, next to another thermometer lying on the sidewalk

Climate change can be a contentious topic, so start by teaching kids about the greenhouse effect, which is easy to see and understand. Then, urge them to explore data collected by other scientists so they can learn to make informed decisions about topics like global warming.

Learn more: Greenhouse Effect at Teaching Science With Lynda

Blow bubbles to explore cell membranes

A student using a straw to blow a bubble inside another bubble in a pan of green liquid

Kids are never too old to enjoy bubbles, so use them to learn more about cell membranes in this fun 7th grade science activity.

Learn more: Cell Membrane Bubbles at The Trendy Science Teacher

Marvel at a density rainbow

We learn early on that oil floats on water, but where do other liquids fit in? Students find out when they conduct this colorful density experiment that has them layer different substances, making a rainbow.

Ride the wave (machine)

Series of sticks held together by duct tape, with clay on the ends of the sticks

Learning about wave action? Build this surprisingly easy wave machine for hands-on exploration.

Learn more: Wave Machine at Engaging Science Labs

Create a taxonomy system

Seventh grade science student sorting a pile of seeds and making notes in a notebook

Students can step into Linnaeus’ shoes by creating their own system of taxonomy using a handful of different dried beans. This is a fun 7th grade science project to do in groups, so students can see the differences between each group’s system.

Learn more: Taxonomy Project at Our Journey Westward

Bake an edible cell model

Cake turned into a cell model with gummi candies and labels

Sure, students could build a cell model out of clay, but cake and candy are so much more delicious! Check out the link below to see how one teacher does it.

Learn more: Edible Cell Model at Weird Unsocialized Homeschooling

Swing a glass of water

This classic science experiment teaches kids about centripetal force. Be forewarned: This could potentially make a bit of a mess, so consider taking this one outside.

Simulate natural selection with a lab activity

Students using tongs to lift marbles from a cup, with worksheets nearby

Travel to the Galápagos Islands and follow in Darwin’s footsteps as students explore finch beak adaptations in this clever natural selection lab.

Learn more: Natural Selection Lab at Teach To Serve

Participate in Project FeederWatch

Students in a classroom looking out the windows to record their bird sightings at nearby feeders

Citizen science projects bring science to life for kids! One of our favorites is Project FeederWatch, where kids put out bird feeders and then count and report on their visitors. This is a great way to build a love of birding for life.

Learn more: Classroom Resources at Project FeederWatch

Experiment with basic substances to learn about chemical change

Test tubes in a rack with bleach, hydrogen peroxide, and vinegar

If you’re introducing lab work and chemistry basics to 7th graders, this easy lab is a great way to do it. They’ll learn safety procedures and get to feel like “real” scientists as they pour, mix, swirl, and more.

Learn more: Chemical Change Lab at Super Sass and Science Class

Assemble an edible DNA model

Edible DNA model made with Twizzlers, gumdrops, and toothpicks

DNA models are always more fun when you can snack on them afterwards. Want to make this a healthier activity? Use fruits and veggies to make models instead.

Learn more: Edible DNA Model at Hess UnAcademy

Craft a food web marble maze

Marble maze with a food web theme

Combine a STEM challenge with learning about food webs in this clever project. Kids will love the hands-on aspect, and it will really help the learning stick.

Learn more: Food Web Marble Maze at Teach Savvy

Keep the STEM learning going with these 15 Items All Middle School Math Classrooms Need .

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Find 7th grade science fair projects in every subject, plus classroom demos, experiments, and other hands-on activities to try.

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50 Top 8th Grade Science Fair Projects and Classroom Activities

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IMAGES

  1. My Hypothesis

    hypothesis science fair ideas

  2. 3rd Grade Science Fair Projects Hypothesis

    hypothesis science fair ideas

  3. question, hypothesis, materials

    hypothesis science fair ideas

  4. Research for science fair project. 20 AMAZING Science Fair Project

    hypothesis science fair ideas

  5. Writing a good hypothesis for science fair project

    hypothesis science fair ideas

  6. Hypothesis Examples For Science Fair

    hypothesis science fair ideas

VIDEO

  1. 10 science project ideas/ science fair projects/best science fair projects

  2. Science Fair Hypothesis, Variables, Materials, and Procedures

  3. Science Fair Projects Easy

  4. Olivia Science Fair Hypothesis

  5. Science Fair Friday Week 6: Hypothesis and Design Goal

  6. An Introduction to the Basics

COMMENTS

  1. Writing a Hypothesis for Your Science Fair Project

    The goal of a science project is not to prove your hypothesis right or wrong. The goal is to learn more about how the natural world works. Even in a science fair, judges can be impressed by a project that started with a bad hypothesis. What matters is that you understood your project, did a good experiment, and have ideas for how to make it better.

  2. Writing a Hypothesis for Your Science Fair Project

    A hypothesis is a tentative, testable answer to a scientific question. Once a scientist has a scientific question she is interested in, the scientist reads up to find out what is already known on the topic. Then she uses that information to form a tentative answer to her scientific question. Sometimes people refer to the tentative answer as "an ...

  3. List of Science Fair Ideas and Experiments You Can Do

    Remember, find something that interests you, and have fun with it. To download and print this list of ideas CLICK HERE. Here's a list of over 30 Science Fair ideas to get you started. Then download science experiments, and watch experiment videos to inspire your project.

  4. Best Science Fair Ideas and Projects by Grade Level

    Grade School Science Project Ideas . Students are introduced to the scientific method in grade school and learn how to propose a hypothesis. Grade school science projects tend to be quick to complete and should be fun for the student and the teacher or parent. Examples of suitable project ideas include: . Determine whether insects are attracted to lights at night because of their heat or their ...

  5. 100+ Easy & FUN Science Fair Project Ideas

    Other Fun & Easy Science Project Ideas. Toilet Paper Comparisons ~ Pink Stripey Socks. Egg Drop Challenge. Press n' Seal vs. Saran Wrap. Hockey Science Experiment ~ Creative Family Fun. I hope you found an idea that will work for your little scientists next science fair project.

  6. 30+ Science Fair Projects That Will Wow The Crowd

    Bleeding Blossoms Explore capillary action and absorption in this science meets art project. Magical Water Blossoms Make beautiful blossoming paper flowers with the help of absorption. This project has a simple wow moment that everyone enjoys watching. 12.

  7. Science Projects (Search: hypothesis)

    Science Fair Project Idea. Scientific Method. The Wright brothers used kites extensively to test their design ideas in the years leading up to their first successful airplane flight. With this science project, you'll learn about kite aerodynamics, and then come up with your own hypothesis about building or flying a kite.

  8. 70 Best High School Science Fair Projects in Every Subject

    Remove the air in a DIY vacuum chamber. Instructables. Difficulty: Medium / Materials: Medium. You can use a vacuum chamber to do lots of cool high school science fair projects, but a ready-made one can be expensive. Try this project to make your own with basic supplies. Learn more: Vacuum Chamber at Instructables.

  9. 50 of the Best Science Fair Project Ideas for Kids

    Find out with this science fair project that can be done with adult supervision, as it needs boiling water. 23. Craft your own thermos bottle and test it out for a project all about insulation. 24. Make a DIY thermometer and test it out for a practical and hands-on science project. 25.

  10. Chemistry Science Fair Project Ideas

    Write out your project idea in the form of a hypothesis as per the scientific method. If you can, come up with five to 10 hypothesis statements and work with the one that makes the most sense. Keep in mind how much time you have to complete the project, so don't select a science project that takes months to complete if you only have a few weeks.

  11. Do a Science Fair Project!

    Your science fair project may do one of three things: test an idea (hypothesis), answer a question, and/or show how nature works. Ask a parent, teacher, or other adult to help you research the topic and find out how to do a science fair project about it. ... Topic ideas: Space topics:

  12. 31 Easy Science Fair Projects for 5th Grade

    In this post, we've assembled 31 easy science fair project ideas for 5th grade. We link each project description to its original source, where you can get more information and step-by-step instructions. Tornado in a Bottle. In this fascinating experiment, water will create a channel as it is emptied from a bottle.

  13. 50 Fantastic 4th Grade Science Projects and Experiments

    Whether you need 4th grade science fair project ideas or are a teacher looking for engaging experiments for the classroom, find them here! ... Try changing up the variables to turn it into a real experiment, then form a hypothesis and find out what happens. Blow unpoppable bubbles Learning Resources. Difficulty: Easy / Materials: Medium.

  14. Sample Variables & Hypothesis

    There are two parts of this hypothesis, and thus two experiments: Experiment #1: Measure the voltage of fresh AA batteries as they are used in different current drain devices. Experiment #2: Compare the rate of voltage change between devices with low, medium, and high current drain. The second experiment does not require any more data ...

  15. 100+ Science Fair Project Ideas for Grades 2nd-8th

    A science fair project should include all of the following elements before entering a science fair: Background research. Bibliography and source list. A question to answer and a hypothesis to test. Experiment variables. Data recording and analysis of the experiment. Conclusion report.

  16. science fair project

    An ice cube will melt in less than 30 minutes. You could put sit and watch the ice cube melt and think you've proved a hypothesis. But you will have missed some important steps. For a good science fair project you need to do quite a bit of research before any experimenting. Start by finding some information about how and why water melts.

  17. 15 Cool Science Fair Projects & Ideas

    See the best science fair project ideas for middle school kids. Middle schoolers will be able to do more independent projects, and they should have a higher bar for formulating a hypothesis and repeatedly testing it. By analyzing the data in a group, students can improve their verbal reasoning skills in a team. 6.

  18. Hypothesis Examples

    Here are some research hypothesis examples: If you leave the lights on, then it takes longer for people to fall asleep. If you refrigerate apples, they last longer before going bad. If you keep the curtains closed, then you need less electricity to heat or cool the house (the electric bill is lower). If you leave a bucket of water uncovered ...

  19. 150+ Exciting 5th Grade Science Project Ideas With Hypothesis

    Here we have a list of 120+ exciting 5th grade science project ideas with hypothesis in 2023: Balloon Rocket. See also 150+ Cool Two Truths And A Lie Ideas For Students In 2023. Hypothesis - If I inflate a balloon and release it, then it will move forward because of the escaping air. Moldy Bread.

  20. List of Science Fair Project Ideas

    Aerodynamics & Hydrodynamics. The 'Ultimate' Science Fair Project: Frisbee Aerodynamics. Aerodynamics & Hydrodynamics. The Paper Plate Hovercraft. Aerodynamics & Hydrodynamics. The Science of Launching an Airplane by Catapult. Aerodynamics & Hydrodynamics. The Swimming Secrets of Duck Feet. Aerodynamics & Hydrodynamics.

  21. 100+ 8th Grade Science Fair Projects & Ideas

    Physics 8th Grade Science Fair Projects. Stand on a pile of paper cups. Measure buoyancy over time. Explore Newton's Laws. Explore how color affects heating by light absorption. Measure the speed of light in different materials. Build a levitating water fountain. Measure surface tension of different liquids.

  22. Sixth Grade Science Projects

    Sixth Grade Science Projects. (702 results) Science Buddies' sixth grade science projects are the perfect way for sixth grade students to have fun exploring science, technology, engineering, and math (STEM). Our sixth grade projects are written and tested by scientists and are specifically created for use by students in the sixth grade.

  23. 50 Best 7th Grade Science Fair Projects and Classroom Activities

    Mummification, oxidation, electroplating, and more! Engage every student with these 7th grade science fair projects, whether they're interested in biology, chemistry, physics, environmental science, or any other discipline. Plus, find interesting classroom demos, experiments, and hands-on activities to spice up your lesson plans!