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Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

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

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

In this science fair project, young children notice and track changes in trees throughout the year.

Free science fair project idea that examines the impact of gravity on a dropped carton of eggs. Design a device to protect the eggs from cracking.

This project explores the effectiveness of various common household ingredients in cleaning tarnished and oxidized coins.

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

Check out this fun science fair project idea to explore fun facts about fruit juices and learn why do juices turn bad in the fridge.

Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

How fast is the wind blowing? This science experiment provides step-by-step instructions to help you answer this question.

The objective of this science fair project idea is to determine whether frozen vegetables have more nutrients than canned vegetables.

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

The objective of this science fair project is to examine the cleanliness of salad preparation techniques.

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

Science fair project that determines which materials cause the most friction by sliding blocks of wood down a ramp.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

Measure the densities of various fruits and vegetables to determine if there is a relationship between density and nutritional value.

In this "paper and pen" science fair experiment, students will research the difference between standard time and astronomical mean time.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

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

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

Science fair project that determines whether wireless networks damage living plants. Are WiFi radiation hazardous to your health?

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

In this science fair project, students will learn how to calculate the formula for the thermal decomposition of potassium chlorate.

More height, more steep, more speed! This science project investigates whether there is a correlation between the height of the roller coaster and the slope.

Boiling water in a paper cup is possible because of convection and the thermal properties of water and paper. Learn how with this fun science fair project idea.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?