Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Discover whether cold or hot water from the faucet will boil faster on the stove.

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

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

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

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

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

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

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

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

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

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

Determine if gender affects the ability to identify different smells.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Discover how and which salt melts ice the quickest.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!