Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

This science fair project idea explores whether talking to a plant will help it grow.

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

This science fair project idea produces varying pitches of sound.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

This science fair project idea produces sounds by creating vibrations using different objects.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

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.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

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.