Sample Questions

1. A galaxy with a large nucleus and tight spiral arms would be classified by Hubble as
• Sa
• Sb
• Sc
• S0
• Irregular
2. Hubble classified galaxies into
• barred spirals, spirals, and ellipticals
• ellipticals, dwarfs, and spirals
• globular, open, and irregular
• spirals, ellipticals, and quasars
• spirals, ellipticals, and irregulars
3. Which of the following would you expect to find in the spiral arms of our galaxy?
• K stars
• O stars
• white dwarfs
• globular clusters
• none of the above
4. The relative scarcity of young stars in Elliptical galaxies is not surprising because
• they have so much interstellar matter that we can't see young stars in them.
• their rapid rotation makes it tough for new stars to form.
• their slow rotation causes newly formed stars to fall in to the center and be difficult to observe.
• they have so little interstellar matter for creating young stars.
• ellipticals actually are composed mostly of young stars.
5. A friend asks you: "Is the Milky Way the edge of the Universe?" You reply that it is not the edge, but that the Universe is made up of
• billions of other galaxies like our own.
• billions of globular clusters.
• stars and gas surrounding our Milky Way extending far out.
• vast numbers of black holes.
• atomic particles.

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