This science fair project idea investigates how images are influenced by changes in light.

Science fair project that determines what neurons are, what they do and compiles this vital information in an illustrated book.

This project compares test subjects' responses to whining and other "attachment" and attention-getting sounds to determine which sounds are most distracting.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

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

This science fair project idea produces sounds by creating vibrations using different objects.

The objective of this science fair project is to determine whether drawing with the right side or the left side of your brain will produce a better picture.

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.

Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

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.

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

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

This science fair project idea produces varying pitches of sound.

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

This interactive project invites science fair-goers to participate in examination and recording to demonstrate the importance of firsthand observation.

Find out if most people can distinguish the difference between tones on different instruments.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

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.

The actual factors affecting friction may surprise you! Learn about the coefficient of friction and put some trigonometry into practice in this science project.

This project explores whether similar type movie scenes are accompanied by music with similar characteristics.

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.

Check out this science project idea that will have your kid investigate how dots (also known as pixels) are used to create digital photographs.

This play-activity causes young children to focus on and become more aware of their sense of hearing and the power of their ears.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

This science fair project examines the vein structure (venation) of leaves in order to determine the class of the plant sample.

This science fair project idea demonstrates the process of land erosion.