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Find out whether putting something on top of a plant will inhibit its growth.

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.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

Find out whether a longer airplane will fly farther or a wider paper airplane.

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.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

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

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

In this fun experiment, we'll find out how color affects heat absorption!

This science fair project idea determines if the temperature of rubber effects how high it bounces.

This science fair project idea experiments with spinning color wheels and optical illusions.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

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

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

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

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 is to set up a compost bin to convert food scraps and organic waste.

Examine the effect of pressure on carbonation in soda.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

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