Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

This project compares the strength of one, two, and three-ply toilet paper.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

This science fair project idea investigates the hardness property of minerals.

Do different types of oil mix or stack? Find out in this science fair project idea!

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

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

Gymnosperms are coniferous trees that reproduces using pine cones to spread seeds. Check out this simple pine cone experiment to learn about the process!

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

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

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

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

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

This science fair project idea investigates if fats add to the flavor of food.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

How powerful is the reaction between baking soda and vinegar? Find out here!

This science fair project idea explores substances that cause a bubble to last longer.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

The project investigates how friction affects motion by using different surface textures.