Test for a correlation between perceived color and heart rate. Using a stethoscope and stop watch, measure the heart rate (beats per minute) of volunteers.

Test the effects of left and right handedness on writing speed and penmanship. Volunteers hand-copy the same paragraph of text, which samples look neater?

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

Test of the effect of exercise on rote memory. Prepare a single list of 40 randomly chosen words. Have volunteers recall as many words as possible.

Science fair project that uses iodine solution to demonstrate how starch is turned into sugar when it is chewed in the mouth.

In this wind tunnel experiment, you'll make a wind tunnel to test lift and airflow on a model plane and explore aerodynamics and the Bernoulli Principle.

Study blind spots, run experiments in blind spot detection, design an original blind spot experiment, test your design on volunteers

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

In this science experiment, test the pH of soil surrounding a gas station to determine if gas stations have a negative effect on the environment.

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

Learn how to relight a candle by lighting the vaporized wax in the smoke, and test how various kind of wax and candle brands relight differently.

Are red apples really sweeter than green apples? The objective of this science fair project is to test the theory with quantitative evidence.

Determine which factors promote the greatest memory interference. Administer test, time how long it takes subjects to complete different tasks.

In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

Which public places harbor the most bacteria and germs? Test different environments to find out where the most bacteria live in this science project.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

Bring a little science to your third grader's Christmas as you test out his sense of smell by exposing him to common Christmas scents found in your kitchen.

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

Which sunscreen is most effective at blocking the sun's harmful UV rays? Test the SPF of various sunblock brands in this cool science project!

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

Analytical chemists perform chromatography to separate colors into pigments. Test the food coloring used in M&M's and Skittles candy in this fun project!

Polymers remove oil from contaminated waters. The purpose of this science project is to test the effectiveness of a polymer in cleaning up an oil spill.

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

Put your young paleontologist's puzzle-solving skills to the test by having her hunt for dinosaur bones and then assemble them to create dinosaur skeletons.

Science fair project that determines which foods and drinks contain the highest amount of glucose.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

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.