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Magnetism
Revision of Magnetism chapter
Question | Answer |
---|---|
Name the three substances in the periodic table that can be attracted to magnets. | Iron, Nickel, Cobalt |
What happens if like poles are brought together? | They repel |
What happens if unlike poles are brought together? | They attract |
What evidence is there that the earth has its own magnetic field? | A freely suspended magnet will always line up in North-South direction. |
List some uses of magnets. | Fridge magnets, loudspeakers, amplifiers, electromagnet in scrapyard, navigation compass |
What do we call a magnet that is free to rotate and indicate direction? | Compass |
What is a magnetic field? | The area around a magnet in which the magnetic force has an effect. |