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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.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

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

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for “something that will improve the school.”

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

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

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

In this fun experiment, we'll find out how color affects heat absorption!

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

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.

This science fair project idea produces varying pitches of sound.

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

Science fair project in which you will start a fire from scratch without using matches or a lighter.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

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

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!

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.