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The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

Can cells be frozen? This science fair project provides information to answer this question.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Determine how salinity affects the circulation of warm and cold water. Note whether the warm water mixes or forms a layer with cold water.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Science fair project idea that compares number and relative sizes of leaf stomata. Collect leaves of plant species, identify, observe stomata with microscope.

Science fair project which examines how stopping a tomato's ripening process using the enzyme ethylene effects the tomato plant and its reproduction cycle.

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

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Learn how to relight a candle by lighting the vaporized wax in the smoke, and test how various kind of wax and candle brands relight differently.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

This science fair project idea determines if the color of light affects the growth of plants.

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

Kids will make a homemade electroscope and explain how it detects static charges through induction in this fun science fair project idea.

Determine whether people can actually taste the difference between âhealthyâ cookies and the traditional version.

Science fair project which compares the rates of photosynthesis for various light sources. Which type of light will be best for photosynthesis and why?

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

Check out this fun science fair project idea to explore how building on different types of soil affects the relative stability of buildings in an earthquake.

Get a cool science project idea on a photovoltaic cell and explore the various factors that affect the energy output of the photovoltaic cell.

In this experiment you will use plastic and magnets to test your local soil composition.

Discover the interactions of synthetic dyes and natural dyes on natural and artificially-made fabrics.

This project explores how and how much one family can reduce the amount of garbage they accumulate over a three month period.

This experiment will explore whether adding different substances to a gel affects its strength.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

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