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

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

Examine the effect of pressure on carbonation in soda.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

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

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

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.

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

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

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

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

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

Discover whether a metal will expand under hot water.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.