Exam (Final) Practice Test 2

Exam (Final) Practice Test 2 - MULTIPLE CHOICE QUESTIONS...

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MULTIPLE CHOICE QUESTIONS (100 pts.) Choose the best answer to each of the following questions using what you have learned in ASTR 101. Indicate choice on your scantron. (2 pts. each) 1. The Sun will spend the longest period of its life as a A. Big Mac. B. red giant. C. protostar. D. pulsar. E . main sequence star. 2. The Big Bang Theory received its strongest observational support with the detection of A. 21 cm radiation. B. quasars. C . the cosmic background radiation. D. open clusters. E. objects like Cygnus X-1. 3. When a hydrogen burning shell develops around a helium core inside the Sun in the future, our star will A . expand and become a red giant. B. expand and become a blue supergiant. C. rapidly collapse to become a white dwarf. D. get ready to explode. E. dim and not provide enough energy for life to continue on Earth. 4. If the mass of a supermassive black hole is 2 billion solar masses, what is the radius of its event horizon? A. 2 billion km B. 4 billion km. C . 6 billion km. D. 8 billion km. E. 20 billion km. 5. The Eta Aquarids were visible the evening of May 5 into the morning of May 6. These meteors are associated with A. Halley’s comet. B. Ceres, the asteroid. C. Eta, the asteroid. D. the zodiacal light E. the great meteor storm of 1833.
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6. The Miller-Urey experiment used electricity to spark gases that would have been found on ancient Earth. After a few days, ___________ was/were found in the water in the enclosed vessel. A. nothing B . amino acids C. DNA D. one-celled animals E. bacteria 7. Which of the following has the most rapid apparent motion in the sky? (You would actually notice it move while you watched.) A. a comet B. Mercury C. the Moon D . a meteor E. an asteroid 8. The iron in the hemoglobin of your red blood cells has 26 protons and 30 neutrons in each nucleus. These nuclei formed A . during the Big Bang. B. shortly after the formation of the Solar System. C. inside the core of the Sun. D. inside the core of a star similar to the Sun but older. E. inside the core of a massive star that eventually became a supernova. 9. Based on observations of other spiral galaxies like our Milky Way Galaxy, astronomers estimate that supernovae occur once or twice a century. The last supernova in our galaxy occurred in 1604. Why haven’t we seen one in more than 400 years? A. Our galaxy does not have star formation taking place today, so there are no young stars blowing up. B. Our galaxy has a high abundance of heavy elements already. C . We cannot see the entire galaxy due to the presence of interstellar dust. D. They go off when we’re not watching so we miss them. E. No stars are older than the Sun in our galaxy, but other galaxies are older so there are more supernovae. 10. In the last lab (it was a computer lab) dealing with the expansion of the universe, you
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This note was uploaded on 02/01/2011 for the course ASTR 101 taught by Professor Deming during the Spring '07 term at Maryland.

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Exam (Final) Practice Test 2 - MULTIPLE CHOICE QUESTIONS...

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