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Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

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.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

This science fair project investigates why the number of visible stars changes from place to place.

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

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

This science fair project idea examines which type of insulation holds in the most heat.

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

This project explores ways to prevent static electrical shocks.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

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

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

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

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

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

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Play with balance and simple engineering as you hurry to create a sturdy rock tower.