In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

How powerful is the reaction between baking soda and vinegar? Find out here!

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

In this project, different brands of microwave popcorn are tested and compared.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

This science fair project idea investigates whether air has mass and weight.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

This project investigates the affect of storage temperature on microwave popcorn.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Discover whether cold or hot water from the faucet will boil faster on the stove.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

In this project, waves of vibrations are experimented with using water in glasses.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

Is it a square or a circle? See if you can trick your friends with this zany science project!

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

Using a toy race car kids create a visual model of the Doppler Effect.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!