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

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

This experiment will explore how mallets of various materials and weight create sonic tones of varying lengths.

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

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.

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

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

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

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.

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.

Find out whether matching resonant frequencies can cause objects to shatter.

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

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

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

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.

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

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

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

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.

In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.

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

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

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