Check out this fun high school science fair project idea to investigate how the cell membrane regulates what moves into and out of cells.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

Using a toy race car kids create a visual model of the Doppler Effect.

This science fair project idea demonstrates that plants give off water.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

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

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

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

Help children understand the power of germs and the importance of hand washing with this visual activity that introduces the concept of scientific inquiry.

The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

This science fair project idea teaches about the size of two different systems: the solar system and an atomic system.

Test whether plants can grow without sunlight and water.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

This science fair project idea investigates the relationship between memory and age.

What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!

This project examines whether playing music during class helps students learn or if it distracts students from learning.

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

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

Do you hate to waste energy? In this experiment, you will design a machine that is powered by the process known as energy transformation.

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

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

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

This science fair project idea explores if an LED light can be powered by vegetables and/or fruits.

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

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

By dropping a magnet through a copper tube, kids observe the cool (and bizarre) braking effect produced by the eddy currents predicted by Lenz's law.