Magnets and Magnetic Fields Quiz
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5 questions, one answer each
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1. What happens when two north poles are brought close together?
- A. They attract
- B. They repel
- C. Nothing happens
- D. They both lose their magnetism
2. Which of these is NOT a magnetic material?
- A. Iron
- B. Cobalt
- C. Copper
- D. Nickel
3. Where is the magnetic field around a bar magnet strongest?
- A. At the centre of the magnet
- B. At the poles
- C. Exactly halfway between the poles
- D. It is the same strength everywhere
4. A steel paperclip is attracted to a bar magnet but drops as soon as it is moved away. What does this show?
- A. The paperclip is a permanent magnet
- B. The paperclip is an induced magnet
- C. The paperclip is not magnetic at all
- D. The bar magnet has lost its magnetism
5. A student plots a magnetic field pattern with a compass and finds the field lines are much more spread out on one side of a bar magnet than expected near a pole. What can be concluded, and why does a compass point north-south in general?
- A. The field is unusually weak there because the compass is broken; compasses point north-south because they are attracted to other compasses
- B. The field is weaker there than expected near a pole; a compass points north-south because the Earth's core behaves like a magnet
- C. The field is stronger there; compasses point north-south due to the rotation of the Earth
- D. Spread-out lines always indicate a fault in the magnet; compasses point north-south only near the equator