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Questions and Answers
What are the two properties possessed by lodestone?
What are the two properties possessed by lodestone?
- It attracts large pieces of iron and sets itself along a definite direction
- It attracts small pieces of iron and sets itself along a definite direction (correct)
- It repels small pieces of iron and sets itself along a definite direction
- It attracts small pieces of iron and moves randomly
What is the origin of the word 'magnet'?
What is the origin of the word 'magnet'?
- From the Latin word for iron oxide
- From the Greek word for natural magnet
- From the Chinese word for lodestone
- From the place 'Magnesia' where the ore was found (correct)
Why are artificial magnets prepared from iron?
Why are artificial magnets prepared from iron?
- Because iron is stronger than natural magnets
- Because iron is naturally magnetic
- Because iron is the only metal that can be magnetized
- Because iron is easily available and can be shaped conveniently (correct)
What happens when a freely suspended magnet is allowed to rotate in a horizontal plane?
What happens when a freely suspended magnet is allowed to rotate in a horizontal plane?
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What is the polarity named when an end of the magnet rests in the geographic north direction?
What is the polarity named when an end of the magnet rests in the geographic north direction?
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What happens when two like poles of magnets are brought close to each other?
What happens when two like poles of magnets are brought close to each other?
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Why were natural magnets found to be inadequate for use?
Why were natural magnets found to be inadequate for use?
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How did the Chinese use pieces of lodestone earlier than 2500 B.C.?
How did the Chinese use pieces of lodestone earlier than 2500 B.C.?
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What ore was used to make the first known magnets?
What ore was used to make the first known magnets?
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What are artificial magnets prepared from?
What are artificial magnets prepared from?
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