This science fair project idea explores the fastest average speed a human can talk.

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

Learn about the field of psychophysics and to learn about "Just Noticeable Differences."

Determine how effective animal camouflage is by simulating it in an indoor and outdoor setting.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

Determine whether carpet placed on a lawn will kill grass and weeds. Choose an area of lawn that you would like to remove, record grass that is dead or dying.

In this science fair project, students make their own rain gauge to measure rainfall.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

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.

This fun middle school science fair project idea explores the process of respiration and determines whether boys and girls have the same lung capacity.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

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

Demonstrate and describe acid-base reactions of baking soda and baking powder by making pancakes.

Take a dive into the candy jar with this yummy science experiment.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

Cleaning can be a chore, but not with this sudsy experiment!

What colors can dogs see? Do they only have black and white vision, or can they see other colors too? Find out in this cool science experiment!

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

Science fair project in which you will start a fire from scratch without using matches or a lighter.

This science fair project idea tests the efficacy of both synthetic and natural antibiotics.

Do you think heat can affect a plant's growth rate?

This science fair project idea determines if the color of light affects the growth of plants.

Kids use applied math to build and test a parabolic mirror solar hot dog cooker in this cool engineering science fair project idea for middle school.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.