Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

In this experiment you will replicate the mummification process by making a hot dog mummy.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Dive into the world of cooking oil and smoke points to discover just how fast some oils start smoking.

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.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Check out this cool science fair project on identifying rocks and minerals for kids.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

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

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

Cleaning can be a chore, but not with this sudsy experiment!

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

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.