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

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

This science fair project idea shows how a vibrating object transfers energy to whatever it touches.

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

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.

This science fair project idea demonstrates sonar mapping of the ocean floor.

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

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.

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

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

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

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.

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

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.

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.

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.

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.

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

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

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.