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

This exploration of different types of energy will help young minds appreciate and observe thermal, kinetic, mechanical, and other forms of energy.

This science fair project idea produces varying pitches of sound.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

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

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

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

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

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

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 kids' activity is fun to perform and impressive to watch. Plus, it's a great example of Newton's First Law of Motion at work.

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

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

This awesome diffraction grating experiment puts high school students' applied math skills to the test by having them calculate the wavelength of laser light.

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.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

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

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

This science fair project idea studies how talking on a cell phone affect driving?

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

Help your own young scientist tackle the wonders of static electricity from the comfort of his own home!

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.

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

Teach your little scientist about the amazing powers of gravity by comparing the falling speeds of two yummy fruits

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

Introduce your second grader to the crazy world of static electricity with just a balloon and a sheet of paper.

Bring the magic and mystery of the night sky to the light of day with this fun constellation art project!

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.