Our World's Amazing Magnets

Laurie Freeman

The Basics

What is magnetism?

-Magnetism is a phenomenon by which materials assert an attractive or repulsive force on other materials.

What are magnets?

-A magnet is an object made of certain materials which create a magnetic field.

What are temporary magnets?

-Temporary magnets are those which act like a permanent magnet when they are within a strong magnetic force, but lose their magnetism when the force disappears. An example of this would be a paperclip.

What are permanent magnets?

-A magnet that retains its magnetic properties in the absence of an inducing field or current

What are electromagnets?

-A soft metal core made into a magnet by the passage of electric current through a coil surrounding.

What are superconductors?

-A material that can conduct electricity or transport electrons from one atom to another with no resistance.

Fun facts!

-Metals such as iron and nickel are attracted.

-Some magnetic objects must be inside a field.

-The worlds largest magnet is Earth.

-Opposites attract.

-Mercury, Neptune, Jupiter, Saturn, Uranus, and Earth are the only planets with magnetic fields.

the greeks discovered magnets!

Magnets are used in many of the things we use daily!

What can magnets do?

-Clean up spilled pins, tacks, and more

-Locate metal studs in the wall

-Get iron out of your cereal

-Remove stubborn batteries

-Keep paper clips together

-If you have a metal trashcan, you can use magnets to keep the bag in place

-Hold things on the fridge

-You can use magnets in a compass

-They are used to keep the fridge closed

-Can find certain keys

We should appreciate magnets!