Magnets and magnetism

Magnet

any material that attracts iron or materials containing iron

magnetic poles

are points on a magnet that have opposite magnetic qualities

Where are the strongest effects on a bar magnet

near the ends of the bar magnet

north and south

a magnet will always have a north and a south pole (always in pairs)

Magnetic force

the force of attraction or repulsion is generated by moving or spinning electric charges in the magnets

a magnetic field

it exists in the region around a magnet in which magnetic forces can act

weather a material is magnetic depends on the…

material’s atoms

As an electron moves around it makes or induces…

a magnetic field

in materials such as iron, groups of atoms are in tiny areas called…

domains

The domains of magnets may not always stay lined up. When they move, the magnet…

demagnetizes

ferromagnets

have strong magnetic properties and are made from iron, nickel, and cobalt

electromagnet

is a magnet made by an electric current and usually has an iron core

temporary magnets

are made from materials that are easy to magnetize

permanent magnets

are difficult to magnetize

earth behaves as if it has a ___________ running through its center

bar magnet

core is made up of…

iron and nickel