permanent & induced magnetism, magnetic forces and fields

at which part of a magnet are the magnetic forces strongest?

the poles of the magnet

what happens when 2 magnets are brought close to each other?

they exert force on each other

what type of force is exerted if 2 like poles of a magnet are brought near each other?

a repulsive, non-contact force

what type of force is exerted if 2 unlike poles of a magnet are brought near each other?

an attractive, non-contact force

what is the difference between a permanent magnet and an induced magnet?

• a permanent magnet produces it own magnetic field

• an induced magnet becomes magnetic when placed in a magnetic field

what type of force does induced magnetism always cause?

a force of attraction

what happens when an induced magnet is removed from a magnetic field?

the induced magnet loses most/all of its magnetism

what is a magnetic field?

the region surrounding a magnet where another magnet or magnetic material experiences a non-contact force

give 4 examples of magnetic materials

1. iron

2. steel

3. cobalt

4. nickel

what can always be said about the force between a magnet and a magnetic material?

It is always attractive

how does the strength of a magnetic field alter as you move further away from the magnet producing it?

the magnetic field strength decreases the further you move away

in what direction does a magnetic field point?

• in the direction that a north pole would experience a force if placed in the field

• from the north seeking pole to the south seeking pole of a magnet

what does a magnetic compass contain?

a small bar magnet that points in the direction of the earth’s magnetic field