Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

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.

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.

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

This play-activity causes young children to focus on and become more aware of their sense of hearing and the power of their ears.

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

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.

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.

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.

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

This biodiversity project examines the biodiversity in your own backyard.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.