In this fun experiment, we'll find out how color affects heat absorption!

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

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.

Which bread molds fastest? Explore the different kinds of breads and how quickly they mold, along with the role of preservatives.

This science fair project idea explores if male or female humans are more likely to exhibit some form of color blindness.

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 creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Many substances are compounds of different elements. This experiment combines iodine and zinc to make zinc iodide.

This science fair project teaches students about wilting and browning of salad greens.

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

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

This experiment will explore the best way to create a perfect soft-boiled egg.

Determine if picking up fallen food in 5 seconds or less prevents the transfer of bacteria from the ground.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Science fair project that determines whether windmills can be designed so that birds will not feed on them. Will they discriminate between different patterns?

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

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

Science fair project that uses distillation to convert salt water into fresh water.

The objective of this science project is to determine the length of time for different seeds to germinate.

Check out this fun high school science fair project idea to identify features of a mushroom and learn how do humans use fungi to their benefit?

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

This science project examines the history of earthquakes and what we can do to prevent future disasters.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

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