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impact – n. the act or force of one thing hitting another
acquire – v. to get something
plate tectonics – n. the geology theory that Earth’s surface is made of very large sections or plates that move very slowly
generate – v. to produce something or cause something to be produced
solar system – n. a group of planets and objects that orbit around a star
assumption – n. something that is believed to be true or probably true but that is not known to be true : something that is assumed
meteorite – n. a piece of rock or metal that has fallen to the ground from outer space
probe – n. a long thin scientific object used to measure or get information
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