Science
How long, in kilometers, is the average single thread unwound from a silkworm cocoon?
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What is the name for a tool that makes work easier to do?
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What spacecraft takes astronauts into space, orbits the Earth and can be flown more than once?
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The obscuring from sight of one celestial body by another is also by what scientific term?
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What is the irregular and instantaneous motion of air called?
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If we multiply force by the distance moved, which quantity do we get?
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