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Physical Science 1 Quiz 5 Name: _____________________________ For multiple choice questions, choose the best answer. 1. (1 pt.) The end stage of the life cycle of an extremely high-­‐mass star is a a. quasar. b. neutron star. c. black hole. d. white dwarf. 2. (1 pt.) When the term singularity is mentioned, the object under discussion is probably a a. white dwarf. b. black hole. c. neutron star. d. nova. 3. (1 pt.) What type of nebula is the Horsehead? a. Primitive b. Bright emission c. Bright reflection d. Dark 4. (1 pt.) Stars in the process of forming are called a. giant planets. b. brown dwarfs. c. red supergiants. d. protostars. 5. (1 pt.) The two major types of nebulae are a. emission nebulae and dark nebulae. b. bright nebulae and dark nebulae. c. bright nebulae and reflection nebulae. d. reflection nebulae and emission nebulae. 6. (1 pt.) The next phase in the life cycle of the Sun will be a. the formation of a red giant. b. a move to the main sequence. c. collapse to a white dwarf. d. a supernova explosion. 7. (1 pt.) The Sun has been on the main sequence a. for about 10 million years. b. for about 5 billion years. c. forever. d. for about 14 billion years. 8. (1 pt.) The Sun will finally become a a. brown dwarf. b. neutron star. c. black hole. d. white dwarf. 9. (1 pt.) What color are the stars with the hottest photosphere? a. White b. Yellow c. Red d. Blue 10. (1 pt.) The Sun's energy is generated from the fusion of a. uranium to form lead, Pb. b. helium nuclei to form carbon nuclei. c. hydrogen nuclei to form helium nuclei. d. carbon nuclei to form magnesium nuclei. 11. (1 pt.) Enormous filaments of excited gas arching over the Sun's surface and extending hundreds of thousand of kilometers outward are called a. sunspots. b. solar flares. c. prominences. d. coronal arcs. 12. (1 pt.) The Sun projects charged particles into space, giving rise to a flow of radiation called the a. heliosphere. b. solar wind. c. corona. d. chromosphere. 13. (1 pt.) The asteroid belt is between the orbits of a. Earth and Mars. b. Mars and Jupiter. c. Earth and Venus. d. Jupiter and Saturn. 14. (1 pt.) The motion of a Foucault pendulum proves that Earth is a. rotating. b. revolving. c. precessing. d. an oblate spheroid. 15. (1 pt.) The planet Earth a. has retrograde motion. b. is the closest planet to Venus. c. is the smallest of the terrestrial planets. d. has a unique circular orbit 16. (1 pt.) The planet Mercury a. has retrograde motion. b. is the closest planet to Venus. c. is the smallest of the terrestrial planets. d. has a uniquely circular orbit. 2 17. (1 pt.) Which of the following planets moves the slowest in its orbit around the Sun? a. Earth b. Mars c. Venus d. Mercury 18. (1 pt.) The terrestrial planets have a. relatively high densities. b. solid surfaces. c. weak magnetic fields. d. all of these. 19. (1 pt.) Counting the Sun as the brightest object in the sky, which of these is the third brightest object in the sky? a. Polaris (the North star). b. the Moon. c. Venus. d. Mars. 20. (1 pt.) The Jovian planets a. are composed mainly of hydrogen and helium. b. have no solid surface. c. have rings. d. all of these. 21. (1 pt.) The planet whose axis of rotation lies almost in its orbital plane is a. Neptune. b. Uranus. c. Saturn. d. Jupiter. 22. (1 pt.) The planet with the Great Red Spot is a. Jupiter. b. Neptune. c. Uranus. d. Saturn. e. Mars. 23. (1 pt.) The planet with the largest volcano in the solar system is a. Earth. b. Mars. c. Venus. d. Mercury. 3 24. (2 pts.) Mercury’s surface temperature varies between +473°C and -­‐173°C over the course of a day while Venus’s surface temperature remains constant at about +477°C. Explain the cause for this difference in surface temperature between these two planets. 25. (2 pts.) Two opposing forces/phenomena hold a star together: one keeps it from collapsing on itself and the other keeps it from exploding. What are these two forces/phenomena called? 4