In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

This science fair project idea explores whether white light can be separated into different colors.

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

This science fair project idea investigates how color affects temperature.

This science fair project idea determines which method of hand cleansing is the most effective.

This science fair project idea determines what household items are good conductors of electricity.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

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

This science fair project idea determines what household items are good conductors of electricity.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

This science fair project idea demonstrates that plants give off water.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.