This science project allows students to study the psychology of happiness.

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

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

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

Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

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

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

This science fair project idea identifies trees using a dichotomous key.

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

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

This science fair project idea explores alcoholic fermentation at work by making your own soda.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

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

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

In this science fair project, students create their own miniature salt flats at home.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

Science fair project that examines condensation and the conditions needed in order for dew to form.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

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

This science fair project idea explores the different properties of matter.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

This project explores ways to prevent static electrical shocks.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.