This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

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.

This science project teaches students to classify different shapes of leaves.

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

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

In this experiment we will be determining whether birds prefer certain colors of seed.

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

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

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

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?

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

This science fair project idea experiments with spinning color wheels and optical illusions.

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.

This science fair project idea examines the reason boats are shaped and engineered.

This science fair project idea investigates how color affects temperature.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

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

Discover whether cold or hot water from the faucet will boil faster on the stove.

This project examines whether people's taste perception is influenced by what they see.

In this project children practice the scientific method while playing with puffy paint.

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

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

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