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

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

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

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

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

Find out the differences (if any) in the frequencies of voices produced from a computer, from a phone, and directly coming out of the voice box of a human.

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

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

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.

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

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

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