Science
What is the name of an instrument that records vibrations in the Earth's crust?
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Which scientific term is defined as the rate at which a wave oscillates in cycles?
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Who was known for his famous "oil-drop" experiments to determine the charge of the electron?
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Which Apollo mission was launched on December 21, 1968, and spent Christmas in lunar orbit?
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A unit for measuring pressure is also known as what?
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What are plants that grow, flower, make seeds and die in one year?
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