Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

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.

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

This science fair project idea explores the different properties of matter.

Help your fifth grader trace your family's roots and interview all the living mothers to create a makeshift, 3-D family tree!

This fun science fair project idea helps students learn how acid rains are formed and explore how acid rain damages the environment.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Challenge your learner to design and build a city of their own in this creative engineering activity.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

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

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

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

Help your kindergarten science maven explore the water cycle without getting everything wet.

In this plant habitats activity, children play the role of an ecologist and take surveys of different areas to discover the best habitat for dandelions.

Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!

This tricky building block challenge asks your learner to think creatively. They will work on their divergent thinking skills as they try to fill up an index card perfectly with building bricks.

Learn with makes water molecules work with this fun and easy science activity!

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

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

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.