Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

This project explores if people more easily distinguish between faces of people of their own race or ethnicity compared to those of other races or ethnicities.

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!

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

The objective of this science fair project it to determine whether adding ethanol alcohol to gasoline slows the run time of a motor.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

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

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

This experiment explores whether caffeine improves athletic performance.

In this science fair project, students investigate how different colors influence appetite.

Science fair project idea helps conceptualize probability. Compare probabilities and outcomes of cards drawn from a standard playing deck.

Discover whether people can distinguish what a person looks like just by listening to their voice.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

Science fair project that examines the biodiversity of ant populations in various locations.

Test whether spot magnets can help improve the symptoms of an injury.

The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

Science fair project idea examines different techniques for memorization. Analyze results of memory tests to determine which method is most effective.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!

This science fair project idea explores discover whether there are any patterns or trends in the memories between different genders.

This science fair project idea investigates the difference in reaction times between boys and girls.

Check out this fun science project idea to explore different types of starches and learn how removing starch affects the quality and taste of food.

Assess physical and mental states of subject before and after drinking coffee. Compare initial expectations with their reported conditions.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.