finalC - Astronomy 10 - Fall 2008 Final Exam December 16,...

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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 C. PLEASE ANSWER C TO QUESTION 1. 2. Stars A and B have the same luminosity, but star A has a higher effective temperature than B. What do these facts imply? (a) Star A has a larger radius. (b) Star B has a larger radius. (c) Star B is more massive. (d) This situation cannot occur; two stars with the same luminosity always have the same effective temperature. 3. The most common isotope of uranium (atomic number 92) has an atomic weight of 238. What else can we conclude about the uranium atom? (a) Its nucleus contains 92 electrons. (b) Its nucleus contains 146 neutrons. (c) It has 92 protons and 92 neutrons. (d) It has 238 protons. 1 4. Which of the following is the leading theory for the Moons origin? (a) The Moon was originally a passing asteroid captured by the Earths gravity. (b) The Moon formed from planetesimals simultaneously with the Earth. (c) The Moon formed from material ejected during the collision of the Earth and another planet-sized object. (d) The Earth split into two pieces because of its rapid rotation; the smaller piece became the Moon. 5. Which of the following does NOT have an Active Galactic Nucleus? (a) blazars (b) pulsars (c) Seyfert galaxies (d) radio galaxies 6. Which of the following is evidence for the existence of dark energy? (a) the flat rotation curves of spiral galaxies (b) gravitational lensing of light around galaxy clusters (c) accelerating expansion of the universe (d) apparent faster-than-light motion of jets from quasars 7. Which of the following types of galaxies is reddest in color? (a) spiral galaxies (b) elliptical galaxies (c) irregular galaxies (d) colliding galaxies 2 8. Jupiter is approximately 5 AU from the Sun. On Jupiter, how many times brighter is the Sun than it is on Earth? (a) 1/25 (b) 1/5 (c) 5 (d) 25 9. When quasars were first discovered, they appeared as point-like objects with what odd charac- teristic, previously unseen in any star? (a) Their pattern of absorption lines showed them to be made entirely of heavy elements. (b) Their luminosity varied in time. (c) Their absorption lines were highly redshifted. (d) They appeared to move across the sky faster than the speed of light. 10. Which statement accurately describes a star about to undergo a supernova explosion?...
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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.

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finalC - Astronomy 10 - Fall 2008 Final Exam December 16,...

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