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Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

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

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

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

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

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

Start your toy engines -- this is going to be a fast and friction-filled race!

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

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

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

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

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

In this project children practice the scientific method while playing with puffy paint.

This science fair project idea explores substances that cause a bubble to last longer.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!