Magnets

An example of a natural magnet is

• magnesium

• magnum

• magnetite

• gold

A magnet can be .... or induced

If the north poles of two magnets are placed near each other, they will

• attract

• repel

• do nothing

• explode

If the south poles of two magnets are placed near each other, they will

• attract

• repel

• do nothing

• explode

If the north pole of a magnet is placed near the south pole of another magnet, it will be

• attracted

• repelled

• the same

• destroyed

The Earth has a magnetic field because of

• its core of liquid iron

• human activity

• an unknown reason

• oil fields

Where are the Earth's magnetic poles?

• On the equator

• On the geographic poles

• Near the geographic poles

• Near the equator

A compass works because...

• a magnetised needle aligns itself with the Earth's magnetic field

• the fluid in a compass is magnetic

• gravity aligns the compass

• ...who knows? It must be magic!

A magnetic field...

• is a way of describing what forces a magnet would experience in different positions

• can have its shape revealed by iron filings

• is invisible, but you can see its effects

• all of the above

Which of these are magnetic?

• Nickel

• Gold

• Titanium

• All of the above