In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

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

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?

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

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

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

This project examines whether people's taste perception is influenced by what they see.

Dive into the world of cooking oil and smoke points to discover just how fast some oils start smoking.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

Design a survival kit. Brainstorm various survival scenarios. Address basic human requirements and natural resources. Describe each tool as well uses.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

This science fair project idea investigates the difference in reaction times between boys and girls.

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.

Check out this cool science fair project on identifying rocks and minerals for kids.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

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.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Science fair project which determines whether a person's taste in music is dictated by the key that the song is written in.

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

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.