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

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 explores whether talking to a plant will help it grow.

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

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.

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.

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

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

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

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