Science
Who discovered the rotating magnetic field that is the basis of Alternating Current?
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What is a steep-sided circular depression commonly known as?
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What is a return of the electron beam to the top of a television picture tube?
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What are many cells that form together to provide a certain function called?
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The oldest living tree is 4,843 years old and can be found where?
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What is it called when the Earth, Sun and Moon lie in a straight-line configuration?
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If a jet cruises at 575 mph, how far will it go in 12 hours?
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What planet in our solar system has the most liquid water on its surface?
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