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 produces varying pitches of sound.

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.

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

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

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

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

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

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

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

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.

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.

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

In this fun science fair project idea learn about the multiple sources of radio waves and fin out how difficult it is to block them.

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

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.

The purpose of this science fair project is to build a basic radio.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

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

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.

Design a hearing protection device to protect their ears from loud noises. Examine the properties of current protective hearing devices, materials.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.

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

Get a cool and easy science fair project idea which helps high school students in understanding concepts behind the working of a microphone.

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 awesome diffraction grating experiment puts high school students' applied math skills to the test by having them calculate the wavelength of laser light.