Suppose an astronomer proposed to build a major observatory on the campus of your school. Would it make a good observing site? Explain why or why not
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Answers will vary somewhat with location, but in general campuses are bright environments that are poor observing sites from a light pollution standpoint. Other factors students may mention might include light from surrounding or nearby cities, excessive cloudiness or rain, windy area with a lot of turbulence, and low altitude with lots of atmosphere above.
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Briefly explain why there is a main sequence on the H-R Diagram
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Why are Uranus and Neptune known as ice giants, rather than gas giants?
A. Their interiors may contain large quantities of water ice and other ices under tremendous pressure. B. Their interiors may contain liquid water and other materials that would be ices if not for the hot cores of those planets. C. Uranus and Neptune are much colder than Jupiter or Saturn. D. Uranus and Neptune are much smaller than Jupiter or Saturn. E. None of these choices are correct.
A car's motor gives out just at the bottom of a big hill, but the car starts coasting up the hill. In what direction is the acceleration of the car just as it stops momentarily before rolling back down the hill?
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All objects made from metals have a much smaller cost when the metal comes from recycled material rather than ore
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