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Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

Here's a science activity to help your child investigate how seeds are designed to travel.

This science fair project idea determines exactly how much of an effect road grade has upon a cyclistâs speed.

Science fair project that compares tree leaf size and shape based on the leaf's position in the tree. Is their is a noticeable difference between high and low?

This science fair project idea examines which is the best way to get rid of water stains (stains caused by just water) on fabric.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

This experiment investigates whether the psychological phenomenon of the halo effect can be used to explain people's perceptions of others.

This project will examine the relationship between wind velocity and direction and the distance a baseball travels.

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

This project examines what types of objects burn and which burn faster and cleaner.

Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.

This cool middle school science fair project idea helps students explore the role phototropism plays in the growth of green plants.

Which sunscreen is most effective at blocking the sun's harmful UV rays? Test the SPF of various sunblock brands in this cool science project!

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

What if the shape of the Earth weren't spherical? How does its shape affect our gravity, climate, and tides? Model these questions in this cool project!

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

The actual factors affecting friction may surprise you! Learn about the coefficient of friction and put some trigonometry into practice in this science project.

This science fair project idea explores whether cats can be trained in the same way that dogs can.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

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

In this science fair project, students examine how the flow rate in a stream affects the growth of aquatic plants.

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

This study observes plants, insects and an animal living in proximity to a known source of EMF.

Science fair project that helps visualize how the human brain functions by constructing a model of a brain.

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

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

In this fun science fair project idea learn about the multiple sources of radio waves and fin out how difficult it is to block them.

Determine if each hemisphere specializes in dealing with specific functions. Include illustrations of the brain, it hemispheres.

Explore the effect of wind speed on the burning rate of a candle.