Ch. 19 & 20 - Chapter 19/20 1. The Andromeda galaxy,...

Chapter 19/20
1. The Andromeda galaxy, unlike most other galaxies, has
a. green shift.
b. blue shift.
c. no observable shift.
d. red shift.
2. Our galaxy is classified as a(n) 3. Elliptical galaxies often appear reddish due to an abundance of 4. The sun is
5. Quasars are thought to be the centers of
a. distant galaxies.
b. distant clusters.
c. distant constellations.
d. distant nebulas.
6. The big bang theory states that the universe began with a
gigantic explosion
7. The number of universes known to exist is

c. one.
d. three.
8. All stars