This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

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

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

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!

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

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

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

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.

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Construct and experiment with a periscope using reflected light rays to gather an image.

What happens when colored beams of light mix? You might be surprised.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

By using static electricity generated from their body, a child can cause a small fluorescent lamp bulb to light up!

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!