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

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Future whistleblowers can learn about product safety standards with this exercise in writing and researching.

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.

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

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

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

Does your child know that salt water conducts electricity? This simple experiment will show how salt water acts as a conductor to electrical currents.

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

Every time a sound is produced it emits a sound wave. This experiment demonstrates how sound travels, using nothing more than a spoon and a string!

Experiment with magnetism in this 8th grade science activity in which your child will create a working compass using a steel needle, magnet, and jar.

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

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!

The purpose of this science fair project is to build a basic radio.

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

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

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

Teach your child about using pumps to move water in this simple and educational preschool science activity!

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

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

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

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

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

Science isn't ho hum anymore when it involves building catapults to teach your fifth grader about projectile motion.

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

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.

Take advantage of the fact that ink and water don't mix and introduce your kid to suminagashi, a Japanese form of art.

Help your kindergarten scientist understand the concept of surface tension with this simple science experiment.

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.