magnetism revision

magnetism revision

Open Ended

which substances can be picked up by a magnet?

Only three metals can be attracted by a magnet

• iron

• cobalt

• nickel

Why isn't steel on that list?

• steel is a mixture, mainly iron, with some other things

• 
  

• 
  

Multiple Select

Which combination of magnetic poles will repel?

• north-north

• north-south

• south-north

• south-south

Multiple Choice

How can you tell if a piece of metal is a magnet?

• see if it sticks to a magnet

• see if it is repelled be a magnet

Only a magnet is repelled by a magnet.

Any steel or iron will be attracted to a magnet, whether it is magnetic or not.

Multiple Choice

Around a magnet is an invisble area called the

• magnetic attraction

• magnetic force

• magnetic field

• magnetic law

drawing field lines

continuous lines

that don't cross

and have arrows

from North to South

Look at this diagram

• are the magnets attracting or repelling?

Multiple Choice

attracting or repelling?

• attracting

• repelling

• can't tell

The earth has a magnetic field

how is it detected?

Multiple Choice

how is the earth's field detected?

• with a ruler

• with a compass

• with a voltmeter

• with a telescope

We can make an electromagnet

• by wrapping an iron core with a wire and making a current go through it

Open Ended

What is the main advantage of an electromagnet?

Multiple Choice

Which of the following are magnetic poles?

• north and south

• positive and negative

• east and west

• red and blue

Multiple Choice

Which of the following is not a magnetic material?

• steel

• cobalt

• aluminium

Multiple Choice

What do two poles of the same type do when they are brought close together?

• attract

• repel

• nothing

Multiple Choice

The arrow on magnetic field lines shows them flowing in which direction?

• left to right

• north to south

• south to north

• east to west