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The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

Generate gas from garbage. The purpose of this science fair project is to simulate how landfills generate gases that can be used to create energy.

This science fair project outlines the uses of gold and explores the monetary value of gold.

This science fair project idea attempts to prevent another tragedy in Gonaives and encourages technological advances against flooding.

This science fair project discovers the properties and uses of sand and develops new or improved methods, techniques, or products involving sand.

This science fair project idea increases the space efficiency of living areas and encourages economic improvements via new real estate ideas.

This science fair project idea determines the properties of rainwater and examines the techniques for harvesting rainwater.

This science fair project idea deals with the qualities of shade on a sunny day.

What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.

Polymers remove oil from contaminated waters. The purpose of this science project is to test the effectiveness of a polymer in cleaning up an oil spill.

The objective of this science project is to investigate why NASA has been using aerogel for the Stardust Project for collecting gas and dust from comets.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

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.

This science fair project idea attempts to develop a new or improved eco-friendly packing material.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

This science fair project idea raises awareness of a real ecological issue.

The goal of this fun science experiment is to explore the limitations of sight and learn working of the human eyes.

Check out this cool science project idea to explore the differences in feeding behaviors of birds and if other species of birds also have color preferences.

Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.

Check out this fun science fair project idea to learn about seismic waves and how fast they travel during an earthquake.

Check out this cool science fair idea on why hard fruits become soft and learn how to compare the sugar content between ripe and unripe fruits.

Become familiar with ratios and learn how to measure the diameter of the Sun and the Moon in this fun science fair project idea.