Science Facts About Magnets for Kids

Science Facts About Magnets for Kids
••• Hemera Technologies/AbleStock.com/Getty Images

A magnet is anything that creates a magnetic field, or exerts a force on ferromagnetic objects such as iron or other magnets. The Earth's magnetism comes from the large amount of liquid metal inside of the Earth's core.

Lodestone

Lodestone was used in ancient China and Greece to calibrate compasses.
••• Kim Steele/Photodisc/Getty Images

A lodestone, containing iron, is a magnet that naturally occurs in nature. It was used in ancient China and Greece to calibrate compasses. Sailors discovered that when a piece of magnetic material is suspended from a thread, it always points north-south.

Permanent vs. Induced

Permanent magnets retain their charge forever, unless they are demagnetized.
••• Jupiterimages/Polka Dot/Getty Images

Permanent magnets retain their charge forever, unless they are demagnetized. Induced magnets only become magnetized when they come in direct contact with a permanent magnet; they will lose their magnetism when no longer attached to a permanent magnet.

Magnetization

Hammering and heating a piece of metal in a north-south direction will align the atoms and magnetize the object. Rubbing a piece of ferromagnetic material in a north to south direction with another magnet can magnetize the object.

Opposites Attract

When the north pole of a magnet comes close to the north pole of another magnet, they will repel each other.
••• Matthew Cole/iStock/Getty Images

When the north pole of a magnet comes close to the north pole of another magnet, they will repel each other. When a north pole of a magnet comes into contact with the south pole of another magnet, they will attract each other.

De-magnetization

When a magnet is heated in a hot flame, it will lose its magnetization.
••• Hemera Technologies/AbleStock.com/Getty Images

When a magnet is heated in a hot flame, it will lose its magnetization because the molecules will become mixed up and no longer align in a north-to-south manner.

Related Articles

How to Make Rare Earth Magnets
Difference Between Hematite & Neodymium Magnets
What Causes Things to Get Magnetized?
Types of Temporary Magnets
The Uses of Different Shaped Magnets
Kinds of Magnets
How to Magnetize an Iron Rod
How Does Heat Affect Magnets?
How Strong Is a Standard Magnet?
How to Magnetize Things
Facts About Magnets
Types of Magnets
Types of Metals That Attract Magnets
How to Remagnetize a Compass Needle
List of Metals That Are Attracted to Magnets
What Causes a Permanent Magnet to Lose Its Magnetism?
How Does a Magnet Lose Its Magnetism?
How to Make Objects Move with a Magnet
What Kinds of Metals Do Not Stick to Magnets?
Demagnetizing a Steel Nail