Plants and light seem to be good buddies, but how far does the friendship really go?

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

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

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

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.

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.

Try this simple 2nd grade science experiment to teach your child about the principles of luminosity and light reflection.

You don't need to wait for rain to see a rainbow. Make one yourself, and teach your child about light and weather in the process.

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

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

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

This science fair project idea determines which method of hand cleansing is the most effective.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

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.

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

Enjoy those warm spring and summer nights with your child while teaching some basic astronomy at the same time.

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.

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

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

Try this fun and simple activity to help nurture your child's observation skills and nourish a growing love of science!

This science fair project idea demonstrates that plants give off water.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

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.