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

How does mold grow? Kids find out by testing different conditions to measure mold growth rate and learn about what factors cause mold to grow more quickly.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

How does light affect plant growth? Do different colors of light work better than others? Find out in this classic science fair project idea.

In this science fair project, we will test how different kinds and shades of hair respond to bleach.

Find out whether packaged seeds actually do expire in this new science fair project idea.

This science project investigates the influence of different genres of movies on appetite.

This super fun science project, perfect for young children, combines crafts, dressing up as animals, outdoor play, and life science learning.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

This science fair project idea examines various dead zones and investigates the cause and how it can be fixed.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

In this experiment, your middle schooler will chart the effects of oil on a feather in order to grasp the tragic effects of oil spills on wildlife.

Do suds equal more clean or does a sud-free cleaning agent works just as well or even better?

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

Do your laundry and your science project simultaneously! This science fair project investigates whether the color of a garment affects the time needed to dry.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

This experiment will determine how different kinds of light affects the strength of bakerâs yeast.

High school students learn about resistance, resistivity, and if copper is the best metal conductor in this great physics science fair project idea.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

This science fair project idea explores whether dogs do look like their owners.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

Use watercolors and crayons to teach your child about resistance while she creates a beautiful Easter decoration with this festive craft.

This experiment evaluates if people have an accurate perception of how much personal time they spend interacting with technology.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

This science fair project idea compares the cuteness reaction between genders.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.