This science fair project idea researches the effects of acid rain on plant growth.

This science fair project idea is develops new or improved paper making techniques and encourages recycling.

This science fair project investigates why the number of visible stars changes from place to place.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

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

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

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

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

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

The project is to investigate yeast fermentation and its results on hand of latex balloons.

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

Find out whether packaged seeds actually do expire in this new science fair project idea.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

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?

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

This science fair project idea identifies the properties of soap bubbles and invents a new or improved bubble solution.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

In this science fair project, students create their own miniature salt flats at home.

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

This science fair project will help students learn about non-vascular plants, such as mosses.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.