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This science experiment explores why leaves change color in the fall and the role of photosynthesis in leaf coloration.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Sure, you already know that water is made up of hydrogen and oxygen, but did you know that oxygen levels differ in different types of water?

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

Boiling water in a paper cup is possible because of convection and the thermal properties of water and paper. Learn how with this fun science fair project idea.

This project examines the vulnerability of fruit flies, Drosophila melanigaster, to irradiation. Will exposure result in mutations?

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

Will your liquid weigh less once you remove the fat from it? Find out in this science fair project idea.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

This science fair project investigates why the number of visible stars changes from place to place.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

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.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

This science project involves comparing the relative effectiveness of salt, pepper and dehydration in food preservation.

Study the effect of music on blood pressure. Compare blood pressure readings before and after the listening session. Analyze results, write a detailed report.

This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

This science project challenges students to study the salt content in tap water and learn about electrochemistry.

Check out this fun science fair project idea to explore how building on different types of soil affects the relative stability of buildings in an earthquake.

Science fair project that determines how UV radiation emitted by the sun varies depending on the time of day, using a handheld UV detector

In this project students determine which instruments composers use to create birdsongs and birdcalls in classical music.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

The objective of this free science fair project is to examine the way in which the phases of the moon affect circadian patterns in mammals.

Culverts transport seeds away from their original location to different places. This science project examines the effect of culverts on plant growth in streams.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Learn about what happens to a current-carrying wire in a magnetic field in this cool electromagnetism experiment!

This science fair project idea studies which brand of wintergreen candy produces the most sparks in the dark.

This cool middle school science fair project idea helps students explore the role phototropism plays in the growth of green plants.

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

This science fair project idea demonstrates how our fingers prune when in water.