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What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

This project explores whether there is an effect on people, including heart rate and self-expressed mood, when they are exposed to different types of music.

Science fair project that teaches you key definitions of molecular science, and how different isotopes of an element affect the relative atomic mass.

The objective of this science fair project is to determine the rate at which participants can respond to different patterns.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.

Boost your preschooler's attention to detail by getting her to explore the differences between two different pumpkins: large and small.

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.

In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

Determine if certain colors of light are more effective for photosynthesis. Plant seeds in cardboard boxes with different light, record visible growth.

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

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

Culverts transport seeds away from their original location to different places. This science project examines the effect of culverts on plant growth in streams.

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

Investigate the different ways in which objects and organisms can be classified, create your own. then have volunteers classify using their own systems.

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

This science fair project explores different types of endangered frogs, and why some are endangered while others are not.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Explore this fun science fair project idea to investigate different microclimates in and around your home and their effects on the plant and animal life.

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

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.

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

The goal of this science fair project was to examine how different angles of decline affect the tipping point of a vehicle.