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Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
show Copernicus  
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Copernicus believed the planetary motions were due to:   show
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show rotation of the Earth  
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When considering different hypothesis usually the _____ scientific explanation which can account for all the _____ is the correct one.   show
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Copernicus determined, for each planet, the approximate period of _____ required to orbit around the sun.   show
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show Galileo  
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Kepler demonstrated that as a planet revolves around the sun:   show
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Why did it take Kepler so many extra years to determine the elliptical orbits of the planets?   show
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show greater  
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show Newton  
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show reflecting, refracting  
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show radio telescope  
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show 1.people had come to accept the idea that the Earth was the center of the universe. 2.the treatise claimed the Earth was not at the center of the universe  
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Created by: Tluff