The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

This experiment investigates if stress alters body temperature.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Explore properties of liquids and how temperature and salinity effect surface tension of liquids in this fun- filled science fair project idea.

This science fair project idea examines the reason boats are shaped and engineered.

Explore if planting seeds in a certain direction will affect how fast it germinates.

Construct and experiment with a periscope using reflected light rays to gather an image.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

Test the placebo effect in different groups of people.

Free science fair project idea examining how different types of water affect plant germination and growth.

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

In this project students experiment with making music using only glasses of water.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

This middle school science fair project evaluates test subjectsâ ability to determine what a person is feeling by reading their facial microexpressions.

Discover whether a metal will expand under hot water.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Using a toy race car kids create a visual model of the Doppler Effect.

This science project challenges students to take learned information about weather and climate control and apply it to come up with creative ideas of their own.

Find out whether matte or shiny nail polish lasts longer.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

This science fair project idea studies which brand of wintergreen candy produces the most sparks in the dark.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.