Our Evolving Universe
Self Test 8

1. An E6 galaxy
   1. appears more elongated than an E0 galaxy
   2. is smaller than an E0 galaxy
   3. contains younger stars than an E0 galaxy
   4. is fainter than an E0 galaxy
   
   
2. An Sbc galaxy
   1. is a barred spiral galaxy with a small bulge and loosely wound arms
   2. is a barred spiral galaxy with a large bulge and tightly wound arms
   3. is an unbarred galaxy with properties between Sb and Sc
   4. is a spiral galaxy containing mainly stars of types B and C
   
   
3. The Local Group is
   1. the Milky Way Galaxy and its satellites
   2. the Milky Way Galaxy and the Andromeda galaxy
   3. a group of about 30 galaxies, of which the Milky Way is a fairly average member
   4. a group of about 30 galaxies, Andromeda and the Milky Way being much the largest
   
   
4. Elliptical galaxies
   1. are much more common in rich clusters
   2. are much less common in rich clusters
   3. occur both in and out of rich clusters, just like spirals
   4. are only found in regions of recent star formation
   
   
5. Almost all galaxies outside the Local Group
   1. are moving away from us
   2. are larger than the Milky Way
   3. are spiral galaxies
   4. none of the above

out of 5.

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