Science
What tool uses a magnetic needle that points north?
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What does one call a smaller stream that parallels a larger stream and finally enters the larger stream?
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Which one of the original 7 astronauts sported the middle name of Herschel?
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Which is the planet with the greatest average density?
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What are materials that come from the earth called?
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Who was the first woman to win the Iditarod sled dog race?
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How long, in kilometers, is the average single thread unwound from a silkworm cocoon?
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