This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

Which sunscreen is most effective at blocking the sun's harmful UV rays? Test the SPF of various sunblock brands in this cool science project!

Find out which type of sponge holds the most water.

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

This science project examines the thermal properties of several major greenhouse gases.

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

Science fair project that evaluates how well clothing fabrics block UV radiation by examining the properties of different fabrics.

Compare ability of selected materials to block UV-A radiation. Shine black light though glass at detecting beads underneath. Note color intensity.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Check out this fun science fair project idea to learn about seismic waves and how fast they travel during an earthquake.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

This experiment uses a voice recorder to monitor the progression of a message in the telephone game as it deviates from the original.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

Science fair project that explores the natural process of limestone formation.

This science fair project idea demonstrates the process of land erosion.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

In this science fair project, students investigate the applicability of Benford's Law to many sets of everyday data.

Learn about nature by making your own mini moss garden.

Take a closer look at the soil that surrounds us, and give your child a lesson in Geology 101!

This science fair project idea examines the differences between bottle water, filtered water, and tap water.

Measure the effectiveness of detergent containing a UV-absorbing compound in blocking UV-A radiation. Use black light and UV detecting beads.

Recycling may be a confusing concept for your little one, so take the time to teach them the magic of compost - right in your own backyard!

Here is a quick experiment you can conduct at the playground to introduce or reinforce the concept of Newton's First Law, The Law of Inertia.

What's a crater, and how does it happen? Here's a kindergarten experiment with safe, nontoxic ingredients.

In this "paper and pen" science fair experiment, students will research the difference between standard time and astronomical mean time.

This science fair project idea explores how water and ice can change the form of rocks.

In this experiment, the weight of aluminum cans will be compared.

Teach your child about using pumps to move water in this simple and educational preschool science activity!

This science experiment has students test whether a snail moves faster on concrete or dirt.