Easy Things to Do for Science Fair

Not all science experiments require expensive lab equipment or dangerous chemicals. There are lots of cool projects you can do with regular household items. We've rounded up a big collection of easy science experiments that anybody can try, and kids are going to love them!

1. Amplify a smartphone

DIY smartphone amplifier made from paper cups

No Bluetooth speaker? No problem! Put together your own from paper cups and toilet paper tubes.

Learn more: Mum in the Madhouse

2. Send a teabag flying

Empty tea bags burning into ashes

Hot air rises, and this experiment can prove it! You'll want to supervise kids with fire, of course. For more safety, try this one outside!

Learn more: Coffee Cups and Crayons

3. Watch the water rise

Two side-by-side shots of an upside-down glass over a candle in a bowl of water, with water pulled up into the glass in the second picture

Learn about Charles's Law with this simple experiment. As the candle burns, using up oxygen and heating the air in the glass, the water rises as if by magic.

Learn more: Team Cartwright

4. Set raisins dancing

Raisins floating in a glass of fizzy water

This is a fun version of the classic baking soda and vinegar experiment, perfect for the younger crowd. The bubbly mixture causes raisins to dance around in the water.

Learn more: 123Homeschool4Me/Dancing Raisins

5. Race a balloon-powered car

Car made from cardboard with bottlecap wheels and powered by a blue balloon

Kids will be amazed when they learn they can put together this awesome racer using cardboard and bottle cap wheels. The balloon-powered "engine" is so much fun, too.

Learn more: ProLab

6. Crystallize your own rock candy

Colorful rock candy on wood sticks

Crystal science experiments teach kids about supersaturated solutions. This one is easy to do at home, and the results are absolutely delicious!

Learn more: Growing a Jeweled Rose

7. Repel glitter with dish soap

Square dish filled with water and glitter, showing how a drop of dish soap repels the glitter

Everyone knows that glitter is just like germs—it gets everywhere and is so hard to get rid of! Use that to your advantage and show kids how soap fights glitter and germs.

Learn more: Living Life & Learning

8. Blow the biggest bubbles you can

Girl making an enormous bubble with string and wire (Easy Science Experiments)

Add a few simple ingredients to dish soap solution to create the largest bubbles you've ever seen! Kids learn about surface tension as they engineer these bubble-blowing wands.

Learn more: Scholastic/Dish Soap Bubbles

9. Build a Ferris Wheel

Miniature Ferris Wheel built out of colorful wood craft sticks

You've probably ridden on a Ferris Wheel, but can you build one? Stock up on wood craft sticks and find out! Play around with different designs to see which one works best.

Learn more: Teachers Are Terrific and eHow

10. Learn about capillary action

Glasses of colored water with paper towel strips leading from one to the next

Kids will be amazed as they watch the colored water move from glass to glass, and you'll love the easy and inexpensive setup. Gather some water, paper towels, and food coloring to teach the scientific magic of capillary action.

Learn More: 123 Homeschool 4 Me/Capillary Action

11. Demonstrate the "magic" leakproof bag

Plastic bag full of water with pencils stuck through it (Easy Science Experiments)

So simple and so amazing! All you need is a zip-top plastic bag, sharp pencils, and some water to blow your kids' minds. Once they're suitably impressed, teach them how the "trick" works by explaining the chemistry of polymers.

Learn more: Paging Fun Mums

12. Design a cell phone stand

Basic cell phone stand made from wood craft sticks, paper clips, and rubber bands (Sixth Grade Science)

Use your engineering skills and items from around the house to design and build a cell phone stand.

Learn more: Science Buddies/Cell Phone Stand

13. Recreate the water cycle in a bag

Plastic bag of blue water with a sun and clouds drawn on it (Easy Science Experiments)

You can do so many easy science experiments with a simple zip-top bag! Fill one partway with water and set it on a sunny windowsill to see how the water evaporates up and eventually "rains" down.

Learn more: Grade School Giggles

14. Conduct an egg drop

Raw egg surrounded by paper straws taped into place

Put all their engineering skills to the test with an egg drop! Challenge kids to build a container from stuff they find around the house that will protect an egg from a long fall (this is especially fun to do from upper-story windows).

Learn more: Buggy and Buddy/Egg Drop

15. Engineer a drinking straw roller coaster

Student building a roller coaster of drinking straws for a ping pong ball (Fourth Grade Science)

STEM challenges are always a hit with kids. We love this one, which only requires basic supplies like drinking straws.

Learn more: Frugal Fun For Boys and Girls/Straw Roller Coaster

16. Build a solar oven

Solar oven built from a pizza box with s'mores inside

Explore the power of the sun when you build your own solar ovens and use them to cook some yummy treats. This experiment takes a little more time and effort, but the results are always impressive. The link below has complete instructions.

Learn more: Desert Chica

17. Float a marker man

Float a Marker Man on water with sharpie

Their eyes will pop out of their heads when you "levitate" a stick figure right off the table! This experiment works due to the insolubility of dry-erase marker ink in water, combined with the lighter density of the ink.

Learn more: Gizmodo

18. Discover density with hot and cold water

Mason jars connected at the mouths, with layers of colored water

There are a lot of easy science experiments you can do with density. This one is extremely simple, involving only hot and cold water and food coloring, but the visuals make it appealing and fun.

Learn more: STEAMsational

19. Learn to layer liquids

Clear cylinder layered with various liquids in different colors

This density demo is a little more complicated, but the effects are spectacular. Slowly layer liquids like honey, dish soap, water, and rubbing alcohol in a glass. Kids will be amazed when the liquids float one on top of the other like magic (except it is really science).

Learn more: Wonder How To

20. Crush a can using air pressure

Student's gloved hand holding tongs over a crushed soda can sitting in a bowl of water (Seventh Grade Science)

Sure, it's easy to crush a soda can with your bare hands, but what if you could do it without touching it at all? That's the power of air pressure!

Learn more: Frugal Fun for Boys and Girls/Can Crush

21. Build a da Vinci bridge

Mini Da Vinci bridge made of pencils and rubber bands (Easy Science Experiments)

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. Learn how to build it at the link, and expand your learning by exploring more about da Vinci himself.

Learn more: iGame Mom

22. Grow a carbon sugar snake

Giant carbon snake growing out of a tin pan full of sand

Easy science experiments can still have impressive results! This eye-popping chemical reaction demonstration only requires simple supplies like sugar, baking soda, and sand.

Learn more: KiwiCo/Carbon Sugar Snake

23. Create eggshell chalk

Chunk of pink chalk lying on paper towels (Easy Science Experiments)

Eggshells contain calcium, the same material that makes chalk. Grind them up and mix them with flour, water, and food coloring to make your very own sidewalk chalk.

Learn more: Kidspot

24. Become a human sundial

Children drawing and measuring chalk outlines on the playground

Use that homemade chalk for this activity that turns kids into human sundials! They'll practice measuring skills and learn about the movement of the sun across the sky.

Learn more: Scholastic/Sundial

25. Learn about plant transpiration

Plastic zipper bag tied around leaves on a tree (Easy Science Experiments)

Your backyard is a terrific place for easy science experiments! Grab a plastic bag and rubber band to learn how plants get rid of excess water they don't need, a process known as transpiration.

Learn more: Teach Beside Me

26. Make naked eggs

Child holding a raw egg without its shell

This is so cool! Use vinegar to dissolve the calcium carbonate in an eggshell to discover the membrane underneath that holds the egg together. Then, use the "naked" egg for another easy science experiment that demonstrates osmosis.

Learn more: Making Memories With Your Kids

27. Make sparks with steel wool

Steel wool on fire in a tin pan (Easy Science Experiments)

All you need is steel wool and a 9-volt battery to perform this science demo that's bound to make their eyes light up! Kids learn about chain reactions, chemical changes, and more.

Learn more: The Homeschool Scientist

28. Turn milk into plastic

Student scooping plastic fragments out of a mug next to bottle of vinegar and measuring glass of milk (Easy Science Experiments)

This sounds a lot more complicated than it is, but don't be afraid to give it a try. Use simple kitchen supplies to create plastic polymers from plain old milk. Sculpt them into cool shapes when you're done!

Learn more: Science Buddies/Milk into Plastic

29. Levitate a ping-pong ball

Student holding the cut off top of a bottle with a straw attached through the lid, with a ping pong ball floating over top

Kids will get a kick out of this experiment, which is really all about Bernoulli's principle. You only need plastic bottles, bendy straws, and ping-pong balls to make the science magic happen.

Learn more: Buggy and Buddy/Floating Ping Pong Ball

30. Launch a two-stage rocket

Two long balloons turned into a rocket with straws, rubber bands, and binder clips (Easy Science Experiments)

The rockets used for space flight generally have more than one stage to give them the extra boost they need. This easy science experiment uses balloons to model a two-stage rocket launch, teaching kids about the laws of motion.

Learn more: Science Buddies/Two-Stage Rocket

31. Pull an egg into a bottle

Empty bottle next to a bowl of eggs and a cup of matches with a plastic straw (Easy Science Experiments)

This classic easy science experiment never fails to delight. Use the power of air pressure to suck a hard-boiled egg into a jar, no hands required.

Learn more: Left Brain Craft Brain

32. Test pH using cabbage

Test tubes filled with purple liquid (Easy Science Experiments)

Teach kids about acids and bases without needing pH test strips! Simply boil some red cabbage and use the resulting water to test various substances—acids turn red and bases turn green.

Learn more: Education Possible

33. Clean some old coins

Pennies in containers of cola, vinegar and salt, apple juice, water, catsup, and vinegar (Easy Science Experiments)

Use common household items to make old oxidized coins clean and shiny again in this simple chemistry experiment. Ask kids to predict (hypothesize) which will work best, then expand the learning by doing some research to explain the results.

Learn more: Gallykids

34. Blow up a balloon—without blowing

Two plastic water bottles with inflated balloons attached to the tops (Easy Science Experiments)

Chances are good you probably did easy science experiments like this when you were in school yourself. This well-known activity demonstrates the reactions between acids and bases. Fill a bottle with vinegar and a balloon with baking soda. Fit the balloon over the top, shake the baking soda down into the vinegar, and watch the balloon inflate.

Learn more: All for the Boys

35. Construct a homemade lava lamp

Plastic bottle with blobs of blue oil floating in water

This 70s trend is back—as an easy science experiment! This activity combines acid/base reactions with density for a totally groovy result.

Learn more: Education.com

36. Whip up a tornado in a bottle

Upside-down glass bottle with a water tornado inside (Easy Science Experiments)

There are plenty of versions of this classic experiment out there, but we love this one because it sparkles! Kids learn about a vortex and what it takes to create one.

Learn more: Cool Science Experiments HQ

37. Explore how sugary drinks affect teeth

Four cups of different liquids with eggs floating in them (Easy Science Experiments)

The calcium content of eggshells makes them a great stand-in for teeth. Use eggs to explore how soda and juice can stain teeth and wear down the enamel. Expand your learning by trying different toothpaste and toothbrush combinations to see how effective they are.

Learn more: Feels Like Home

38. Monitor air pressure with a DIY barometer

Homemade barometer using a tin can, rubber band, and ruler

This simple but effective DIY science project teaches kids about air pressure and meteorology. They'll have fun tracking and predicting the weather with their very own barometer.

Learn more: Edventures With Kids

39. Mummify a hotdog

Two hotdogs, one smaller and darker than the other, on a paper towel (Easy Science Experiments)

If your kids are fascinated by the Egyptians, they'll love learning to mummify a hotdog! No need for canopic jars; just grab some baking soda and get started.

Learn more: Science Buddies/Science of Mummification

40. Extinguish flames with carbon dioxide

Series of lit tea lights with a glass pitcher

This is a fiery twist on acid/base experiments. Light a candle and talk about what fire needs to survive. Then, create an acid-base reaction and "pour" the carbon dioxide to extinguish the flame. The CO2 gas acts like a liquid, suffocating the fire.

Learn more: Sick Science/YouTube

41. Do the Archimedes squeeze

Child dropping a ball of aluminum foil into a container of water (Easy Science Experiments)

It sounds like a wild dance move, but this easy science experiment demonstrates Archimedes' principle of buoyancy. All you need is aluminum foil and a container of water.

Learn more: Science Buddies/Archimedes Squeeze

42. Step through an index card

Student stretching out an index card cut into a large rectangle (Easy Science Experiments)

This is one easy science experiment that never fails to astonish. With carefully placed scissor cuts on an index card, you can make a loop large enough to fit a (small) human body through! Kids will be wowed as they learn about surface area.

Learn more: Mess For Less

43. Stand on a pile of paper cups

Child standing on a stack of paper cups and cardboard squares

Combine physics and engineering and challenge kids to create a paper cup structure that can support their weight. This is a cool project for aspiring architects.

Learn more: Science Sparks

44. Mix up saltwater solutions

Glasses of basking soda water, sugar water, plain water, and salt water with red stones in them (Easy Science Experiments)

This simple experiment covers a lot of concepts. Learn about solutions, density, and even ocean science as you compare and contrast how objects float in different water mixtures.

Learn more: Science Kiddo

45. Construct a pair of model lungs

Plastic bottle with pink and black balloons inside, with student pulling a red balloon diaphragm (Easy Science Experiments)

Kids get a better understanding of the respiratory system when they build model lungs using a plastic water bottle and some balloons. You can modify the experiment to demonstrate the effects of smoking too.

Learn more: Surviving a Teacher's Salary

46. Test out parachutes

Child standing on a stepladder dropping a toy attached to a paper parachute

Gather a variety of materials (try tissues, handkerchiefs, plastic bags, etc.) and see which ones make the best parachutes. You can also find out how they're affected by windy days or find out which ones work in the rain.

Learn more: Inspiration Laboratories

47. String up some sticky ice

Piece of twine stuck to an ice cube (Easy Science Experiments)

Can you lift an ice cube using just a piece of string? This quick experiment teaches you how. Use a little salt to melt the ice and then refreeze the ice with the string attached.

Learn more: Playdough to Plato

48. Experiment with limestone rocks

Child pouring vinegar over a rock in a bowl

Kidslove to collect rocks, and there are plenty of easy science experiments you can do with them. In this one, pour vinegar over a rock to see if it bubbles. If it does, you've found limestone!

Learn more: Edventures with Kids

49. Recycle newspaper into an engineering challenge

Kids stacking a textbook into a cone of newspaper tubes (Easy Science Experiments)

It's amazing how a stack of newspapers can spark such creative engineering. Challenge kids to build a tower, support a book, or even build a chair using only newspaper and tape!

Learn more: STEM Activities for Kids

50. Turn a bottle into a rain gauge

Plastic bottle converted to a homemade rain gauge (Easy Science Experiments)

All you need is a plastic bottle, a ruler, and a permanent marker to make your own rain gauge. Monitor your measurements and see how they stack up against meteorology reports in your area.

Learn More: NurtureStore

51. Use rubber bands to sound out acoustics

White plastic cup with rubber bands stretched across the opening (Easy Science Experiments)

Explore the ways that sound waves are affected by what's around them using a simple rubber band "guitar." (Kids absolutely love playing with these!)

Learn more: Science Sparks

52. Send secret messages with invisible ink

I Love You written in lemon juice on a piece of white paper, with lemon half and cotton swabs

Turn your kids into secret agents! Write messages with a paintbrush dipped in lemon juice, then hold the paper over a heat source and watch the invisible become visible as oxidation goes to work.

Learn more: KiwiCo/Invisible Ink

53. Build a folded mountain

Pile of layered towels being pushed together between two plastic tubs

This clever demonstration helps kids understand how some landforms are created. Use layers of towels to represent rock layers and boxes for continents. Then pu-u-u-sh and see what happens!

Learn more: The Chaos and the Clutter

54. Play catch with a catapult

Catapult and catcher made from plastic cups, pencils, and wood craft sticks (Easy Science Experiments)

Catapults make fun and easy science experiments, but we like the twist on this one that challenges kids to create a "receiver" to catch the soaring object on the other end.

Learn more: Science Buddies/Build Ball Launcher

55. Take a Play-Doh core sample

Layers of Play Doh with holes poked into it

Learn about the layers of the Earth by building them out of Play-Doh, then take a core sample with a straw. (Love Play-Doh? Get more learning ideas here.)

Learn more: Line Upon Line Learning

56. Project the stars on your ceiling

Student poking holes in the shape of a constellation on the bottom of a paper cup (Easy Science Experiments)

Use the video lesson in the link below to learn why stars are only visible at night. Then create a DIY star projector to explore the concept hands-on.

Learn more: Mystery Science

57. Build a better umbrella

Cupcake liner turned upside-down over wood craft sticks with water being poured over top

Challenge students to engineer the best possible umbrella from various household supplies. Encourage them to plan, draw blueprints, and test their creations using the scientific method.

Learn more: Raising Lifelong Learners

58. Make it rain

Glass jar of water with shaving cream floating on top, with blue food coloring dripping through, next to a can of shaving cream

Use shaving cream and food coloring to simulate clouds and rain. This is an easy science experiment little ones will beg to do over and over.

Learn more: Mrs. Jones' Creation Station

59. Use water to "flip" a drawing

Drawing of a hand with the thumb up and a glass of water

Light refraction causes some really cool effects, and there are multiple easy science experiments you can do with it. This one uses refraction to "flip" a drawing; you can also try the famous "disappearing penny" trick.

Learn more: Go Science Kids

60. Send a soda geyser sky-high

Students looking surprised as foamy liquid shoots up out of diet soda bottles

You've always wondered if this really works, so it's time to find out for yourself! Kids will marvel at the chemical reaction that sends diet soda shooting high in the air when Mentos are added.

Learn more: Scholastic/Soda Explosion

Looking for even more science fun? Get the best science experiments for every grade K-8 here.

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Source: https://www.weareteachers.com/easy-science-experiments/