Homework spring 6 PDF

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Nancy Morrison....

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ASTR 1010-004 — Survey of Astronomy — Spring 2008

Homework Assignment 6, Due Wednesday, April 16, 2008 Choose the best answer for each of the following and explain your reasoning with one or more complete sentences (required for full credit). Four points each question, 20 points total. Answers must be turned in on paper; do not email. Please write your name on each sheet that you hand in. 1. Which of these stars has the hottest core? (a) red giant (b) red main-sequence star (c) blue main-sequence star 2. What would you be most likely to find if you returned to the solar system ten billion years from now? (a) white dwarf (b) neutron star (c) black hole 3. What would happen if the Sun suddenly became a black hole without changing its mass? (a) The black hole would quickly suck in the Earth. (b) Earth would gradually spiral into the black hole. (c) Earth’s orbit would not change. 4. Which of these forms of radiation passes most easily through the disk of the Milky Way? (a) red light (b) blue light (c) infrared light 5. Where in the Galaxy would you least expect to find an ionization nebula? (a) halo (b) disk (c) spiral arm Extra credit on this assignment: for up to 5 questions that you missed on Quiz 6, give the correct answer, and on a separate sheet (not your test paper!), explain why that answer is correct. Turn in your test paper and score report with this homework. (One point per question; credit only with correct explanation.)...