HW#30: pg. 514 Rev 7 – 9, CST 7 – 9
Rev 7 – 9
7. Would you expect astronomers to have more observational evidence for the evolution of Sun-like stars or high-mass stars? Explain your reasoning.
8. What is the internal structure of a star on the asymptotic giant branch?
9. What is a planetary nebula? Why do many planetary nebulae appear as rings?
CST 7 – 9
7. A white dwarf is supported by the pressure of tightly packed (a) electrons; (b) protons; (c) neutrons; (d) photons.
8. When the Sun leaves the main sequence, in Figure 20.3 ("Red Giant on the H-R Diagram"), it will become (a) hotter; (b) brighter; (c) more massive; (d) younger.
9. A star like the Sun will end up as a (a) blue giant; (b) white dwarf; (c) binary star; (d) red dwarf.