Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 14.1, Problem 14.1CYU
To determine
Classification of the galaxy.
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The sun is about 8 kpc from the center of the galaxy. A kpc or kiloparsec is equal to
a.
10 parsecs.
b.
100 parsecs.
c.
1,000,000 parsecs
d.
1,000,000,000 parsecs.
e.
none of the above.
What happens when galaxies collide?
A. Star collisions will be rare but the shapes of the galaxies will be largely distorted.
B. The shapes of the galaxies will be largely distorted and many of the stars of one galaxy will collide with stars of the other galaxy.
C. The shapes of the galaxies will be distorted and many stars will collide with stars of the other galaxy, as well as with other stars in the same galaxy.
D. Star collisions will be rare and the two galaxies will just pass through each other without any changes.
Is the answer A? Thank you!
The traditional theory states that our galaxy formed
a.
as a large spherical cloud of gas that was rotating very slowly.
b.
from a large cloud of material that broke off from a larger galaxy.
c.
from material that had been ejected in the violent explosion of a dying galaxy.
d.
as a result of mergers between several smaller groups of gas, dust, and stars.
e.
as two massive galaxies collided.
Chapter 14 Solutions
Understanding Our Universe
Ch. 14.1 - Prob. 14.1CYUCh. 14.2 - Prob. 14.2CYUCh. 14.3 - Prob. 14.3CYUCh. 14.4 - Prob. 14.4CYUCh. 14 - Prob. 1QAPCh. 14 - Prob. 2QAPCh. 14 - Prob. 3QAPCh. 14 - Prob. 4QAPCh. 14 - Prob. 5QAPCh. 14 - Prob. 6QAP
Ch. 14 - Prob. 7QAPCh. 14 - Prob. 8QAPCh. 14 - Prob. 9QAPCh. 14 - Prob. 10QAPCh. 14 - Prob. 11QAPCh. 14 - Prob. 12QAPCh. 14 - Prob. 13QAPCh. 14 - Prob. 14QAPCh. 14 - Prob. 15QAPCh. 14 - Prob. 16QAPCh. 14 - Prob. 17QAPCh. 14 - Prob. 18QAPCh. 14 - Prob. 19QAPCh. 14 - Prob. 20QAPCh. 14 - Prob. 21QAPCh. 14 - Prob. 22QAPCh. 14 - Prob. 23QAPCh. 14 - Prob. 24QAPCh. 14 - Prob. 25QAPCh. 14 - Prob. 27QAPCh. 14 - Prob. 28QAPCh. 14 - Prob. 29QAPCh. 14 - Prob. 30QAPCh. 14 - Prob. 31QAPCh. 14 - Prob. 32QAPCh. 14 - Prob. 33QAPCh. 14 - Prob. 34QAPCh. 14 - Prob. 35QAPCh. 14 - Prob. 36QAPCh. 14 - Prob. 37QAPCh. 14 - Prob. 38QAPCh. 14 - Prob. 39QAPCh. 14 - Prob. 40QAPCh. 14 - Prob. 41QAPCh. 14 - Prob. 43QAPCh. 14 - Prob. 44QAPCh. 14 - Prob. 45QAP
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- What are the angular diameters of the following, as seen from Earth? a. The Sun, with radius R = Rsun = 7x10^5 km. b. Betelgeuse, with MV = -5.5 mag, mv = 0.8 mag, and R = 650Rsun. c. The galaxy M31, with R = 30 kpc at a distance D = 0.7Mpc. d. The Coma cluster of galaxies, with R = 3 Mpc at a distance D = 100 Mpc.arrow_forwardOur galaxy is suspected to be surrounded by a galactic corona because the disk of the galaxy a. rotates faster than expected in its outer region. b. rotates more slowly than expected in its outer region. c. rotates faster than expected in its inner region. d. rotates more slowly than expected in its inner region. e. is much flatter than expectedarrow_forwardThe orbits of population I stars I. are confined to disk of the galaxy. II. are very elliptical. III. are nearly circular. IV. are randomly inclined to the disk of the galaxy. a. I b. IV c. I & IV d. II & IV e. I & IIIarrow_forward
- Halo population stars have I. circular orbits in the plane of the galaxy. II. randomly tipped, elliptical orbits. III. old stars with low metal content. IV. young stars with heavy metal content. a. I and II b. I and III c. II and III d. II and IV e. I and IVarrow_forwardOf the following groupings of galaxies, the one that is largest in size is the a. Local Supercluster. b. Local Group. c. filaments and voids. d. Coma Cluster.arrow_forwardIn which portion of the spectrum is the core of the galaxy invisible? a. infrared b. visible c. gamma ray d. X ray e. radioarrow_forward
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