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Unformatted text preview: Astronomy 10 - Fall 2008 Final Exam December 16, 2008 This test has 60 multiple-choice questions. You need Scantron form 882-E to take it. You are allowed to use a calculator and one page (double-sided) of written notes. All other materials and references should be put away. Note the list of equations and physical quantities attached to the back of this test. Be sure to write your full name , SID , and section number on your Scantron form. 1. THIS EXAM IS VERSION B. PLEASE ANSWER B TO QUESTION 1. 2. The centers of galaxy clusters often contain giant elliptical galaxies. What is a plausible expla- nation of this fact? (a) This observation is only an effect of our viewing angle. From a different perspective, spiral galaxies lie at the center. (b) The central galaxies start out as irregulars, but are deformed by tidal gravity into ellipti- cals. (c) Galaxies near the clusters center frequently merge, forming a giant elliptical. (d) The expansion of the universe forces all the less massive galaxies away from the cluster center. 3. Harlow Shapley showed that the Sun is not at the center of the Milky Way by (a) looking at the shape of the milky band across the sky. (b) mapping the distribution of hydrogen gas in the spiral arms. (c) mapping the distribution of red giants in our Galaxy. (d) mapping the distribution of globular clusters in the Galaxy. 1 4. What creates the spiral arms in spiral galaxies? (a) All the galactic dust exists only between arms, thus blocking the light from this interarm region. (b) All the galactic stars exist only inside the arms; thus we see no light between arms. (c) The arms are regions where the star formation rate is higher; thus we find brighter stars there. (d) The arms are where globular clusters reside; the arms stand out because these clusters contain so many stars. 5. Which of the following is evidence for the existence of dark energy? (a) the flat rotation curves of spiral galaxies (b) accelerating expansion of the universe (c) apparent faster-than-light motion of jets from quasars (d) gravitational lensing of light around galaxy clusters 6. Which of the following is the leading theory for the Moons origin? (a) The Moon formed from material ejected during the collision of the Earth and another planet-sized object. (b) The Moon was originally a passing asteroid captured by the Earths gravity. (c) The Moon formed from planetesimals simultaneously with the Earth. (d) The Earth split into two pieces because of its rapid rotation; the smaller piece became the Moon. 7. Planetary nebulae are (a) remnants of the inner cores of high-mass stars. (b) gaseous disks in which planets are forming. (c) the high-speed ejecta from supernova explosions....
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This note was uploaded on 07/09/2010 for the course ASTRO 10 taught by Professor Norm during the Fall '06 term at University of California, Berkeley.
- Fall '06