Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

This science fair idea project identifies the active ingredients in soap and experiments with the properties of soap.

This science fair project idea provides evidence that air is everywhere and takes up space.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

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

This science fair project idea investigates how magnetism can defy the force of gravity.

How do organic materials become soil? This science experiment measures what materials biodegrade.

This science fair project idea examines liquids of different densities.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

This science fair project idea researches the effects of acid rain on plant growth.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

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

This science fair project teaches students the differences between fruits and vegetables.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

This science fair project idea compares biodiversity between drops of water.

This science project idea examines the effect of microwaving on various objects.

This science fair project idea investigates how color affects temperature.

This science fair project idea explores the egg's thin membrane.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

This science fair project idea identifies clouds as a means of predicting the weather.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

This science fair project examines how seeds hitchhike on animals and clothing.

Take a dive into the candy jar with this yummy science experiment.

This science fair project idea produces varying pitches of sound.