AY 101-002                                                      Spring 2008
                       QUIZ #11 (the VERY LAST ONE)

Answer each of the following on a computer-gradeable answer sheet. Be
sure to fill in your name and student number (and blacken their circles as 
well). Write your seat number on a corner of the answer sheet.

1. Galaxies we see at large redshifts (and distances) show us
   A) HOW THEY LOOKED WHEN THE LIGHT LEFT THEM.
   b) how they will look when our light reaches them.
   c) the oldest populations of stars.
   d) galaxies completely lacking central black holes.

2. Some of the earliest views we have of galaxies are noteworthy in 
   a) showing elements in their spectra which no longer exist.
   b) their fully developed spiral patterns.
   c) their enormous size.
   D) FORMING LARGE NUMBERS OF STARS YET BEING MUCH SMALLER THAN WE SEE TODAY.

3. Which of these is likely to have appeared most recently in the Universe?
   a) dark matter.                         c) spiral galaxies.
   B) EARTHLIKE PLANETS.                   d) massive stars.

4. The timespan starting several minutes into cosmic history is associated with
   A) FORMATION OF LIGHT ATOMIC NUCLEI.    c) the first black holes.
   b) formation of hydrogen atoms.         d) the theory of inflation.

5. The cosmic microwave background radiation shows us the time when
   a) the first stars formed.              C) THE UNIVERSE BECAME TRANSPARENT.
   b) the light elements became stable.    d) quasars lit up.

6. The idea of inflation resolved several puzzling aspects of the early 
   Universe by postulating
   A) AN EARLY TIME OF VERY RAPID COSMIC EXPANSION.
   b) energy input from hydrogen fusion.
   c) evaporation of primordial black holes by Hawking radiation.
   d) that the Universe is actually static and only appears to expand.

7. In cosmology, the "dark ages" ended when
   a) the first radiation was emitted.
   b) the Universe became transparent.
   c) stars were no longer blocking each other's light.
   D) THE FIRST STARS WERE FORMED.

8. Observations of distant supernova explosions led to the surprising discovery 
   that
   a) the Universe will eventually collapse back in on itself.
   B) THE EXPANSION OF THE UNIVERSE IS ACCELERATING.
   c) the Universe undergoes cycles of expansion and contraction.
   d) stars have existed longer than galaxies.

9. The anthropic principle deals with
   a) how long it took human life to appear in the cosmos.
   B) THE VARIOUS PHYSICAL LAWS THAT HAVE TO BE "JUST SO" FOR LIFE TO EXIST.
   c) our central location in the Universe.
   d) the uniformity of the Universe on large scales.

10. I'm having a lot of trouble coming up with one more good question.
    Just fill in answer A and we'll call it even.