Review: properties of magnets

What word best describes bar magnets?

• Electromagnets

• Permanent

• Temporary

Which two of these are not magnetic materials? Tick two.

• copper

• steel

• iron

• aluminum

Which term describes alloys which include iron?

• Induced alloys

• Non-ferrous alloys

• Ferrous alloys

What is the test for a magnet?

• attraction and repulsion

• attraction

• repulsion

What do opposite poles of a magnet do?

• attract

• repel

• push apart

What is the name given to the attraction of unmagnetised iron to a magnet?

• permanent magnetism

• induced magnetism

• demagnetisation

What is another term for substances that can only be temporarily magnetised?

• soft

• strong

• hard

• weak

A bar magnet is cut into two equal pieces as shown. What happens to the two pieces? Choose from the pictures on the left.

• A

• B

• C

• D

Specifically in which direction do the lines run in a magnetic field diagram?

• pole to pole

• south to north

• north to south

Where is the strongest magnetic field around a bar magnet?

• above and below

• near the poles

• in the middle

• on the north pole