Magnetism Quiz

A compass works because the Earth has a magnetic field.

• True

• False

The north pole of a compass needle will point towards the Earth's magnetic north pole.

• True

• False

Non-magnetic materials can be attracted by a magnet but cannot be magnetized.

• True

• False

A soft magnet is difficult to demagnetize once magnetized.

• True

• False

Heating a magnet to a high temperature can demagnetize it.

• True

• False

Which of the following materials could be used to make a permanent magnet?

• Iron

• Copper

• Steel

• Aluminium

What is the definition of induced magnetism?

• A material that is always magnetized.

• When a magnetic material is only magnetized when placed in a magnetic field.

• A material that cannot be magnetized.

• A material that is easy to demagnetize.

Which of the following is a use for soft iron?

• Permanent magnets

• Compass needles

• Cores for electromagnets

• Loudspeaker magnets

Which of the following statements about magnetic field lines is true?

• Field lines go into north poles and come out of south poles.

• Lines that are far apart indicate a strong field.

• Field lines come out of north poles and go into south poles.

• Field lines never spread out from the poles.

What is the advantage of using an electromagnet?

• It is always a strong magnet.

• It can be turned on and off.

• It cannot be demagnetized.

• It only attracts non-magnetic materials.