l20q - B). ISP209 C). The Big Bang D). We dont know...

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ISP209s8 Lecture -1- Clicker Question If the Sun suddenly became a black hole, what would happen to the Earth’s orbit? A). The Earth would start a spiral into the Sun B). The Earth would fly off out of the solar system C). Depending of the mass of the Sun, the Earth’s orbit would approximately double or be approximately half of what it is now D). The Earth would join all the other plants at the same radius from the black hole E). Nothing
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ISP209s8 Lecture -2- Clicker Question Which of the following is not evidence for the existence of Black Holes? A). The rotation speed of material around a central object B). Emission of large amounts of energy C). Radio lobes of active galaxies D). A blackbody spectrum of photons
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ISP209s8 Lecture -3- Clicker Question What causes QUASARS, which are very bright (a 100 times the energy output of a normal large galaxy) observed far from Earth? A). Black holes
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Unformatted text preview: B). ISP209 C). The Big Bang D). We dont know ISP209s8 Lecture -4-Clicker Question What does entropy have to do with time? A). We think conservation of entropy explains time B). It is possible that early in the big bang inflation created a universe with too little entropy. Hence, all process tend toward increasing entropy and give time a direction. C). It explains why quasars cause time to increase. D). We know of no connection whatsoever. E). The second law says time must always decrease. ISP209s8 Lecture -5-Clicker Question What is our best guess on the current age of the Universe, and when will all the stars have burned out? A). 13.7 billion years, 10 100 billion years B). 137 billion years, 10 10 billion years C). 13.7 billion years, 10 10 billion years D). 1370 billion years, 10 1000 billion years, E). 1.37 billion years, 10 10 billion years...
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l20q - B). ISP209 C). The Big Bang D). We dont know...

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