A Galaxy Containing Substantial Amounts Of Dark Matter Will

Question: Most elliptical galaxies contain mainly young stars.

Answer: False

Question: Irregular galaxies, although small, often have lots of star formation taking place in them

Answer: True

Question: Supernovae can be used to determine distances to galaxies.

Answer: True

Question: Most galaxies are receding from the Milky Way Galaxy.

Answer: True

Question: Hubble’s law can be used to determine distances to the farthest objects in the universe.

Answer: True

Question: Active galaxies can emit thousands of times more energy than our own Galaxy.

Answer: True

Question: The quasar stage of a galaxy ends because the central black hole swallows up all the matter around it.

Answer: True

Question: Spiral galaxies may be formed by mergers between ellipticals.

Answer: False

Question: Astronomers classify elliptical galaxies by:

a) the number of stars they contain

b) their colors

c) how flattened they are

d) their diameter

Answer: Astronomers classify elliptical galaxies by how flattened they appear.

Question: Hubble’s law states that:

a) more distant galaxies are younger.

b) the greater the distance to a galaxy, the greater the galaxies redshift is.

c) most galaxies are found in clusters.

d) the greater the distance to a galaxy, the fainter the galaxy appears.

Answer: Hubble’s law states that the greater the distance to a galaxy, the greater the galaxies redshift is.