AstronomyFinalA - NAME ASTRONOMY FINAL TEST 1 The...

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NAME __________________________________________________________ ASTRONOMY FINAL TEST ___ 1. The Chandrasekhar Limit is ? Solar Masses. A.1 B.1.4 C.2.512 D.3.2616 E.9.46 ___ 2. Barred galaxies are varieties of A.ellipticals B.irregulars C.spirals D.any of the above galaxies can have "bars" ___ 3. The oldest white dwarf stars in our galaxy appear to be about ? billion years old. A.10 B.13 C.15 D.18.3 E.20 ___ 4. If the density of the universe exceeds critical density the Universe is A.negatively curved B.positively curved C.flat ___ 5. ? nebulae are due to reflection of light from nearby stars. A.absorption B.emission C.reflection D.all of the above are due to reflection of light fron nearby stars ___ 6. The "Drake Equation" the formulation of the Big Bang hypothesis B.shows how stars evolve C.defines the size of the Event Horizon D.speculates on life in the Cosmos E.calculates the extent of amino acids in the Universe ___ 7. The Asymptotic Giant Branch of H-R Diagrams consist of enormous ? stars. C.AGB stars may be "cool" or "hot" ___ 8. The Vogt-Russell Theorem addresses the ? of stars. A.spectral analysis B.temperature profile C.pressure profile D.dark matter problem E.evolution ___ 9. ? show rapid, unpredictable variations in brightness. A.Blazars B.Seyfert Galaxies C.IRAS Galaxies D.Double-lobed Radio Sources E.Quasars ___ 10. ? formulated the classification system of galaxies we use today. A.Olber B.Schwarzschild C.Einstein D.Kirchhoff E.Hubble ___ 11. The decay of elementary particles is termed the ? force. A.gravitational B.electroweak C.weak D.strong ___ 12. Pair production explains the formation of A.protons and neutrons B.matter and antimatter C.electrons and protons D.neutrinos and neutrons E.gamma rays and x-rays ___ 13. A geodesic is a straight line in ? spacetime. A.flat B.curved C.geodesics are always straight lines D.geodesics are never straight lines ___ 14. Contraction will eventually take place in a universe with ? spatial curvature. A.negative B.positive C.flat could be any of these, depending upon the radius of the universe
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___ 15. The "Helium Flash" occurs in stars with masses A.about the size of our Sun stars with slightly more mass than our Sun the most massive stars in the Cosmos ___ 16. The Miller-Urey Experiment A.created life forms within the laboratory B.formulated the Earth's primordial atmosphere C.discussed the origin of oceans D.created amino acids E.showed how oxygen is produced by organisms ___ 17. In a black hole gravity is A.finite B.infinite C.gravity does not exist in a black hole ___ 18. The Milky Way Galaxy is probably an ? galaxy. A.spiral B.irregular C.giant elliptical D.dwarf elliptical E.we cannot determine this as we are situated within this galaxy ___ 19. ? have been especially utilized to find distances in the Cosmos. A.pulsars giants C.Cepheid Variables D.neutron stars holes ___ 20. The nuclear bulge is often mapped using ? wavelengths. A.gamma ray B.x-ray
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AstronomyFinalA - NAME ASTRONOMY FINAL TEST 1 The...

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