Physical Universe
15th Edition
ISBN: 9780077510534
Author: KRAUSKOPF
Publisher: Mcgraw-hill Higher Education (us)
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Question
Chapter 19, Problem 5MC
To determine
The rough number of stars in our galaxy Milky Way.
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The approximate diameter of the disk of the Milky Way is
a.
8.0 A.U.
b.
8.0 light-years.
c.
80 light-years.
d.
80,000 light-years.
e.
80,000,000 light-years.
ccording to modern science, the age of the universe is about
a.
6,000 years
b.
14 billion years
c.
14 million years
Where does gold (the element) come from?
A. It is produced during the supernova explosions of high-mass stars.
B. It was produced during the Big Bang.
C. It is produced by mass transfer in close binaries.
D. It is produced during the late stages of fusion in low-mass stars.
Chapter 19 Solutions
Physical Universe
Ch. 19 - Prob. 1MCCh. 19 - Prob. 2MCCh. 19 - Prob. 3MCCh. 19 - Prob. 4MCCh. 19 - Prob. 5MCCh. 19 - Prob. 6MCCh. 19 - Prob. 7MCCh. 19 - Prob. 8MCCh. 19 - Prob. 9MCCh. 19 - Prob. 10MC
Ch. 19 - Prob. 11MCCh. 19 - Prob. 12MCCh. 19 - Prob. 13MCCh. 19 - Prob. 14MCCh. 19 - Prob. 15MCCh. 19 - Prob. 16MCCh. 19 - Prob. 17MCCh. 19 - Prob. 18MCCh. 19 - Prob. 19MCCh. 19 - Prob. 20MCCh. 19 - Prob. 21MCCh. 19 - Prob. 22MCCh. 19 - Prob. 23MCCh. 19 - Prob. 24MCCh. 19 - Prob. 25MCCh. 19 - Current ideas suggest that what is responsible for...Ch. 19 - Prob. 27MCCh. 19 - Prob. 28MCCh. 19 - The expansion of the universe apparently a. has...Ch. 19 - Prob. 30MCCh. 19 - The elements heavier than hydrogen and helium of...Ch. 19 - Prob. 32MCCh. 19 - Prob. 33MCCh. 19 - Prob. 34MCCh. 19 - Prob. 35MCCh. 19 - Prob. 36MCCh. 19 - Prob. 37MCCh. 19 - Prob. 38MCCh. 19 - Prob. 39MCCh. 19 - Prob. 40MCCh. 19 - It is likely that the planets, satellites, and...Ch. 19 - Prob. 42MCCh. 19 - Prob. 43MCCh. 19 - Prob. 1ECh. 19 - Prob. 2ECh. 19 - Prob. 3ECh. 19 - The earth undergoes four major motions through...Ch. 19 - Prob. 5ECh. 19 - Prob. 6ECh. 19 - Prob. 7ECh. 19 - Prob. 8ECh. 19 - Prob. 9ECh. 19 - Prob. 10ECh. 19 - Prob. 11ECh. 19 - Prob. 12ECh. 19 - Prob. 13ECh. 19 - Prob. 14ECh. 19 - Prob. 15ECh. 19 - Prob. 16ECh. 19 - Prob. 17ECh. 19 - Prob. 18ECh. 19 - Prob. 19ECh. 19 - Prob. 20ECh. 19 - Prob. 21ECh. 19 - There is no day-night difference in cosmic-ray...Ch. 19 - Prob. 23ECh. 19 - Prob. 24ECh. 19 - Prob. 25ECh. 19 - Prob. 26ECh. 19 - Prob. 27ECh. 19 - Prob. 28ECh. 19 - Prob. 29ECh. 19 - Prob. 30ECh. 19 - What is the observational evidence in favor of the...Ch. 19 - Prob. 32ECh. 19 - Prob. 33ECh. 19 - To what event in the history of the universe can...Ch. 19 - Prob. 35ECh. 19 - Prob. 36ECh. 19 - Prob. 37ECh. 19 - Prob. 38ECh. 19 - Prob. 39ECh. 19 - Prob. 40ECh. 19 - Prob. 41ECh. 19 - Prob. 42ECh. 19 - Prob. 43ECh. 19 - Prob. 44ECh. 19 - Prob. 45E
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- The youngest stars are a. extreme population I. b. intermediate population I. c. extreme population II. d. intermediate population II. e. extreme population III.arrow_forwardThe type of star that does not currently exist because our universe is not old enough is a a. red dwarf. b. white dwarf. c. brown dwarf. d. black dwarf.arrow_forwardThe last nuclear reaction in the core of massive stars that uses energy rather than producing energy fuses what element? a. helium b. carbon c. silicon d. ironarrow_forward
- The first stars to form in our galaxy a. had circular orbits. b. had highly elliptical orbits. c. were population I stars. d. all had orbits in the same plane. e. formed the galactic clusters we see today.arrow_forwardMeasured ages of globular clusters and a study of the time required for massive stars to build up the present abundance of heavy elements suggests that the universe is a. at least 20 billion years old. b. no more than 10 billion years old. c. about 14 billion years old. d. flat. e. closed.arrow_forwardThe star Betelgeuse is about 197 pc away. How far is Betelgeuse in ly ? In meters? A. 642.2 ly= 2.08 x 10^18 meters B. 60.4 ly = 5.72 x 10^14 meters C. 642.2 ly = 6.08 x 10^15 meters D. 642.2 ly = 6.08 x 10^18 metersarrow_forward
- If the Hubble constant equals 70 km/s/Mpc, the age of the universe roughly equals a. 6 billion years. b. 10 billion years. c. 12 billion years. d. 14 billion years. e. 20 billion years.arrow_forwardIf our universe is expanding, what are the implications for the separation between two stars within our galaxy? A. The two stars are moving farther apart. B. The two stars are moving closer together. C. The distance between the two stars is unaffected. D. The question is impossible to answer without more information.arrow_forwardThe age of the Milky Way Galaxy has been estimated to be at least 13 billion years based on a. observations of globular clusters. b. observations of open clusters. c. 21-cm radiation from HI regions. d. the rotation curve of the galaxy. e. the energy produced by Sagittarius A*.arrow_forward
- 1. Distance to moon is about one quarter million miles, how much is that in km? m? 2. Distance to star Proxima Centauri is about 2.4 x 1013 miles, how much is that in ly? AU? pc? 3. Distance to Sun is 93 million miles, how much is that in ly? AU? pc?arrow_forwardThe oldest open clusters are a. 3 to 4 billion years old. b. 6 to 7 billion years old. c. 9 to 10 billion years old. d. 12 to 13 billion years old. e. 16 to 17 billion years old.arrow_forwardA galaxy whose spiral arms have a woolly or fluffy appearance are called a. flocculent. b. hairy. c. vague. d. foggy. e. fleecy.arrow_forward
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