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

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

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

This science project examines the history of earthquakes and what we can do to prevent future disasters.

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

What is the Doppler Effect, or the Doppler Shift? The purpose of this science fair project is to determine how distance impacts the Doppler Effect.

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

This science fair project idea produces varying pitches of sound.

In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

Check out this fun science fair project idea to learn about seismic waves and how fast they travel during an earthquake.

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

This experiment investigates whether there are certain sounds that affect men and women differently

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

In this project students determine which instruments composers use to create birdsongs and birdcalls in classical music.

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

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

This project determines what percentage of test subjects react adversely to the sound of fingernails on a chalkboard and explores their physiological responses.