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• Question
3 (1 point) Which of the following is not a characteristic of the stars of the disk component of our
galaxy?
a.circular orbits b.random highly inclined orbits c.higher metal abundance d.young stars e.star
formation regions
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Question 4
(1 point) The (too simple) traditional theory for the origin of spiral galaxies like our Milky Way was that
it formed
a.from a large cloud of material that broke
offf a larger galaxy.
b. as a large rotating spherical cloud of
gas which collapsed
and flattened. c.from
collisions of many smaller galxies
d.from stars which formed independently in a large cluster of galaxies.
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