This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

Science fair project that studies how perfumes are made in order to determine how we can capture a scent.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

This science fair project idea creates an underwater habitat and explores the basic needs of living things under water.

In this science fair project, students will use methylene blue to study the presence of aerobic bacteria in milk.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Science fair project that measure winds speed, temperature, and time of day in order to determine the origins of the wind.

Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

The objective of this science fair project idea is to find out whether refrigerating cosmetics will extend their shelf-life and longevity.

This science fair project idea explores which is better for diffusion and cell absorbing, more surface area, or more volume.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Check out this cool middle school science fair project idea to determine if shopping carts are really carriers of harmful bacteria.

This science fair project explores different types of endangered frogs, and why some are endangered while others are not.

The purpose of this science fair project is to investigate which food wrapping works best to keep refrigerated and non-refrigerated foods from spoiling.

Will your liquid weigh less once you remove the fat from it? Find out in this science fair project idea.

Explore this fun science fair project idea to investigate different microclimates in and around your home and their effects on the plant and animal life.

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

A great science fair project on solar oven design that helps kids learn about solar power and solar heating.

Check out this cool science fair project idea to explore non-chemical means of preserving fruits by using thermotherapy.

Science fair project that determines the correlation between the ability of selected materials to conduct heat and a material's density.

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.

Science fair project that tests the correlation between outdoor temperature or weather conditions and the number of visible stars at night.

Kids make strong bubbles to investigate the effect different additives have on bubble life in this cool science fair project idea.

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