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

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

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

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.

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.

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.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

This science fair experiment idea's objective is to understand the general concept of an acid and a base.

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

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

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

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

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

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

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.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

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

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

In this project, a model of a submarine is built to simulate the buoyancy and displacement of water and air.

The science project fair idea explores the interaction between your nose, mouth, and brain when tasting a new food or drink.

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

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