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This project examines what types of objects burn and which burn faster and cleaner.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

This science fair project idea explores what common compounds can be easily separated out in a centrifuge.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

Research Earthship buildings. Draft a unique architectural design that repurposes used, discarded radial tires. Build scale model of structure.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

Science fair project that tests whether cats have a preference for organic food.

Measure the porosity of rocks by submerging them in water. Measure how much water each rock "drank," by measuring the difference in water volume.

Science fair project that cultivates slime mold and monitors the stages of its development.

This project explores what happens to a rubber band when it is heated and cooled.

Science fair project that compares the properties of different fabrics to determine whether natural or synthetic fabrics are better at wicking away moisture.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

In this science fair experiment about recycling, demonstrate how the wax from a candle can be reused to make another candle.

Find out the differences (if any) in the frequencies of voices produced from a computer, from a phone, and directly coming out of the voice box of a human.

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

In this experiment you will use plastic and magnets to test your local soil composition.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

In this activity your child will create their very own marble maze!

The purpose of this science project is to determine which stimulus, gravity or water, will cause the greatest growth response in a plant.

Determine whether carpet placed on a lawn will kill grass and weeds. Choose an area of lawn that you would like to remove, record grass that is dead or dying.

Research information on vitamin content in foods, Examine the effect of vitamins, test organic samples of fruits, meats, grains for vitamin content.

The objective of this science fair project is the compare the rate and efficiency of disaccharide and polysaccharide fermentation by yeast.

This science fair project idea explores which kinds of earplugs are the most effective.