Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

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

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

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

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

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

This science experiment tests if dog saliva can really help heal wounds.

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

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

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

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

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

This science fair project idea provides evidence that air is everywhere and takes up space.

This science fair project idea explores whether color affects a person's emotional state.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

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

In this science fair project, students use the streak test to tell minerals apart from each other.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.