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This experiment explores the most common colors that appear among a sample of crossbred guppies.

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

In this project, you will observe and record changes in sunspots over two weeks.

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Science fair project that examines learn how the angle of incidence affects the efficiency of solar panels. How does a solar cell work?

Can playing video games trigger an adrenaline rush even though there's no real danger? In this cool experiment you'll learn all about how fight-or-flight works!

Test out various brands of permanent markers to see which one is least water soluble.

This science fair project idea explores which is better for diffusion and cell absorbing, more surface area, or more volume.

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

This project determines what category of person is most likely to be ticklish.

This project investigates the affect of storage temperature on microwave popcorn.

This project concerns activity happening millions of miles away, on the sun.

Learn about our cognitive capacity of attention and to learn about factors that influence attention.

This science fair project idea addresses tempo, and whether faster or slower music works better as a study aid.

This project investigates several commercially decaffeinated tea types (black, green, oolong, white) for the presence of detectable traces of caffeine.

Science fair project that examines the relationship between fluid flow rate, pressure, and resistance.

In this fun science fair project idea learn the difference between additive and subtractive color and why they are handled differently.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Demonstrate that insects observe colors and choose favorites. Place colored pieces of construction paper on a flat, glassy surface, observe bug preference.

This experiment uses personality assessments to evaluate if certain personality traits are more common in people with unusual first names.

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

This science fair project idea determines the most effective method of preserving food.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

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!

Check out this fun science fair project idea for middle school students to learn about the effects of temperature on the density of a gas such as air.

The aim of this science fair project is to study the mathematical construct called magic squares and create a unique magic square puzzle.

Test your skills as a weather forecaster, and learn some science terms on the way!