1) Which of the following are magnetic poles? a) north and south b) east and west c) red and blue 2) Which of the following is NOT a magnetic material? a) steel b) cobalt c) aluminium 3) What do two poles of the same type do when brought together? a) attract b) repel c) make an electric current 4) What do two different poles do when they are brought together? a) attract b) repel c) make an electric current 5) The arrow on the magnetic field lines always go which way? a) south to north b) north to south c) left to right 6) Where are the field lines around a bar magnet closet? a) at the poles b) in the middle c) at the north pole only 7) How can we increase the strength of an electromagnet? a) increase the number of turns of wire b) reduce the number of turns c) reduce the current in the coil 8) What is one difference between electromagnets and bar magnets? a) Bar magnets can turn off but electromagnets can't b) bar magnets have a magnetic field but electromagnets do not c) electromagnets need electricity 9) What can we use to find the shape of a magnetic field? a) an electromagnet b) a coil of wire c) a compass 10) If you stood right on the north pole with a compass what would happen? a) it would point north b) it would point south c) it would spin around

magnets revision

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