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

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

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 idea produces sounds by creating vibrations using different objects.

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

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

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

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

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.

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

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

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

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

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

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

.Have you ever had problems with your wifi signal strength? In this experiment you will learn about how wireless signals pass through the air and solid objects.

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

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.

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

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.

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

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.

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 classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

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.

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

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