Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Here is a quick experiment you can conduct at the playground to introduce or reinforce the concept of Newton's First Law, The Law of Inertia.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for “something that will improve the school.”

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

By using static electricity generated from their body, a child can cause a small fluorescent lamp bulb to light up!

This science fair project idea determines which method of hand cleansing is the most effective.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Science fair project that determines whether mass and weight are the same or different.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Learn whether writing things down really makes things easier to remember.

Find out whether matte or shiny nail polish lasts longer.

This science fair project idea investigates the difference in reaction times between boys and girls.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

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

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.

Teach kids about a fun way they can remember this more efficiently- the power of mnemonics. Kids will be amazed.

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

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

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.

The purpose of this science fair project is to build a basic radio.

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.