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Physical Science 1 Quiz 10 ID # or name: ___________________ Please circle the letter or write the letter next to or under the question number. This quiz is due by 7:30 pm, Wed., May 28th. Please submit your quiz to me via email to one of the following addresses: [email protected] or [email protected] The intention is for each student to work independently on this quiz… you are on the honor system! 1. (1 pt.) What is the visible surface of the Sun called? a. Photosphere b. Atmosphere c. Stratosphere d. Glowing sphere 2. (1 pt.) What is the value for the total energy that reaches each square meter of Earth from the Sun each second called? a. Solar constant b. Solar maximum c. Sunspots d. Solar wind 3. (1 pt.) Gas and dust distributed among the stars is known as the _______________. a. interstellar vacuum b. interstellar void c. Oort cloud d. interstellar medium 4. (1 pt.) When the Sun moves off the main sequence, it will next become a _______________. a. red giant b. dwarf star c. white dwarf d. black hole 5. (1 pt.) The remaining core of a planetary nebula is called a _______________. a. white dwarf b. neutron star c. black hole d. red giant 1 6. (1 pt.) The “surface” of a black hole is known as the _______________. a. core b. corona c. photosphere d. event horizon 7. (1 pt.) Another name for a pulsar is a _______________. a. neutron star b. black hole c. quasar d. red giant 8. (1 pt.) The Sun's photosphere is, by mass, about 25% a. helium. b. carbon. c. hydrogen. d. oxygen. 9. (1 pt.) Brown dwarfs are often described as a. quasars. b. giant planets. c. failed stars. d. pulsars. 10. (1 pt.) A faint white dwarf that temporarily increases in brightness as a consequence of nuclear explosions on its surface is termed a. a nova. b. a Type II supernova. c. a bright nebula. d. a red giant. 2 11. (1 pt.) Which of the following is part of the Sun's structure? a. Globular cluster b. Accretion disk c. Singularity d. Corona 12. (1 pt.) For low-‐mass stars, the life cycle phase that just precedes white dwarf formation is a a. planetary nebula. b. variable star. c. main-‐sequence star. d. red giant. 3