ASTR 10, Descriptive Astronomy (V0077)

ASTR 10, Descriptive Astronomy (V0077) ASTR 10, Descriptive Astronomy (V0077)
Vista Community College, Berkeley, California
Spring Semester, 2003

Quiz - April 3

Name:

1. Draw an edge on picture of the Milkyway Galaxy. Label the disk, bulge, halo, globular clusters, and the approximate location of the sun. For extra credit, label the approximate dimensions in light years or parsecs.

2. In which portion of the milkyway galaxy (listed above) do you expect to find the most new stars being formed? The disk

Where do you expect to find the oldest stars? Globular Clusters

3. T/F The sun will eventually go supernova and become a neutron star.

F. The sun will expand to become a red giant, then will loose its outer layers. The core will remain to become a white dwarf.

4. T/F A star 20 times as massive as the sun will be very bright, but live an extremely short time.

True. A star 20 times as massive as the sun will probably be more than 10,000 times as bright as the sun. That means it will live only about 20/10,000th (0.2%) as long.

5. T/F Most stars are larger than the sun.

False. The sun is larger than about 95% of stars.