Science
What type of simple machine is used on a flag and flag pole?
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What are solid particles that produce color by absorbing or reflecting light called?
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How many astronauts walked on the moon before 1970?
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Which of these things should you do during a thunderstorm?
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Who discovered the rotating magnetic field that is the basis of Alternating Current?
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Which scientific term is best defined as an electrically charged atom?
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What inherited syndrome is believed to be part of the make up of many serial killers?
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