Thermometers are how we measure temperature, and we've all heard the terms "centigrade" and "Fahrenheit" tossed around, but what do they really mean?

In this science fair project, students use the streak test to tell minerals apart from each other.

Test the combustion of different types of woods.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

Check out this cool science fair project on identifying rocks and minerals for kids.

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.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Plants help keep a house cool! This article includes step-by-step instructions for completing this fun and interesting science experiment.

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

Here's a science activity to help your child investigate how seeds are designed to travel.

Is garlic antibacterial? Antimicrobial? Kids find out by using common kitchen equipment and ingredients in this cool and easy microbiology science fair project.

Explore the neural and mental mechanisms at play in mental imagery.

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 science fair project idea explores whether cats can be trained in the same way that dogs can.

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

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

Create your very own scented hand sanitizer that will help your child to keep those nasty germs at bay!

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

This science fair project idea explores what common compounds can be easily separated out in a centrifuge.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

This experiment uses a voice recorder to monitor the progression of a message in the telephone game as it deviates from the original.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

Science fair project that determines whether windmills can be designed so that birds will not feed on them. Will they discriminate between different patterns?

Check out this fun science fair project idea to determine if the size of a particle affect the rate or speed of a chemical reaction.

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

Learn the anatomical and physiological differences between central and peripheral visual systems.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

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