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.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

This science experiment has students test whether a snail moves faster on concrete or dirt.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

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

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

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

This science fair project teaches students about wilting and browning of salad greens.

This science fair project idea investigates how the shape of an object affects drag.

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.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

This classic children's game demonstrates how sound travels through air vs. through a solid.

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.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.