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

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.

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

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.

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