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Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

In this science fair project, students make their own rain gauge to measure rainfall.

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

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.

Find out whether a longer airplane will fly farther or a wider paper airplane.

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

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

This science fair project idea provides evidence that air is everywhere and takes up space.

How powerful is the reaction between baking soda and vinegar? Find out here!

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

This science fair project examines how seeds hitchhike on animals and clothing.

Do you think heat can affect a plant's growth rate?

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

In this Bernoulli's Principle experiment, you'll learn how an increase in the speed of a fluid, like air, decreases pressure.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

This science fair project idea investigates how magnetism can defy the force of gravity.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

People have favorite flavors, but what about ants? Which ant food is the most popular?

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!