Magnetism Practice

This iron filing image shows...

• opposite poles of each magnet are pointed towards each other

• same poles of each magnet are pointed towards each other

• not enough information to decide

Which image is the correct representation of the magnetic field for a bar magnet?

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The north pole of a magnet is attracted to Earth’s geographic north pole. This means Earth’s geographic north pole is actually its magnetic south pole.

• True

• False

Magnetic field lines always point from magnetic south to magnetic north.

• True

• False

A nonmagnetic substance cannot be polarized by a magnet.

• True

• False

What do you end up with if you cut a magnet in half?

• Two unmagnetized pieces

• Two pieces, each with a north pole and a south pole

• One positively charged piece and one negatively charged piece

• One north-pole piece and one south-pole piece

Which of the following metals are attracted to magnets? (Choose all that apply)

• Steel

• Aluminum

• Iron

• Copper

A student wants to make a permanent magnet. Which material should he use?

• Steel

• Iron

• Nickel

• Aluminum

A student has an unlabeled magnet and a piece of iron. These items are identical in appearance.

• Both ends of the bar magnet will attract the unlabeled magnet, while one side of will repel iron

• Neither end of the bar magnet will attract the piece of iron, while both ends will attract the other

• Neither end of the bar magnet will attract the magnet, while both ends will attract the iron

• Both ends of the bar magnet will attract the iron, while one side of the bar magnet will repel other

Temporary​ magnets have a high __________ but low ______________.

• Susceptibility, retentivity

• retentivity, susceptibility

• magnetism, retention

• retention, magnetism