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

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

Explore the properties of light and color using photographic filters. Take pictures of color spectrum, compare results of different filters.

Science fair project which determines which colors of light allow plants to produce the most chlorophyll. How are color and light related to each other?

Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

Science fair project that determines whether moths are attracted to one color of light more than others.

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

How does light affect plant growth? Do different colors of light work better than others? Find out in this classic science fair project idea.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

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

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.

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

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

This experiment will determine how different kinds of light affects the strength of bakerâs yeast.

In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.

Plants and light seem to be good buddies, but how far does the friendship really go?

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

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.

This science fair project idea investigates how images are influenced by changes in light.

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!

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

Explore convex and concave objects and how they reflect light.

In this activity, you'll send your kindergartener on a scavenger hunt to find sounds and create a sound recording. Here's how!

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

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.

Store bowls of fresh fruit in differently lighted environments. Contrast freshness based on appearance.

This science fair project idea produces varying pitches of sound.

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.