Help your child understand surface tension by showing them how they can create a "skin" on top of water.

Discover which fabrics shrink the most in the wash and why.

Determine which kind of rock (igneous, sedimentary, metamorphic) has the greatest reservoir capacity, which is the ability to hold the most oil and natural gas.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

With a clear bottle and a few plastic straws, you can easily make a hummingbird feeder and demonstrate the effects of atmospheric pressure at the same time!

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.

This science fair project idea explores whether white light can be separated into different colors.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

Find out whether matte or shiny nail polish lasts longer.

Find out whether putting something on top of a plant will inhibit its growth.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

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

This project investigates the affect of storage temperature on microwave popcorn.

This project explores ways to prevent static electrical shocks.

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

This science fair project idea investigates if fats add to the flavor of food.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

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.

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.