If an observer walks north toward increasing latitude, the number of circumpolar stars would

If an observer walks north toward increasing latitude, the number of circumpolar stars would
 
  a. remain constant.
  b. decrease.
  c. increase.
  d. Unknown unless you also state the longitude of the observer.

Question 2

If you point toward the zenith right now and then point there again 6 hours later, you will have pointed twice in the same direction relative to
 
  a. your horizon.
  b. the Sun.
  c. the Moon.
  d. the fixed stars.

Question 3

How much of the Earth's surface is experiencing night at any time?
 
  a. less than one-half, because of the tilt of the equator to the ecliptic plane
  b. more than one-half, because of the precession of the poles
  c. exactly one-half
  d. all of the night sky

Question 4

Which of the following statements correctly describes the relationship between stars and constellations?
 
  a. Only stars close to the ecliptic (the Earth's orbital plane) are located in constellations.
  b. Every star is located in a constellation.
  c. Only the brighter stars are in constellations.
  d. Only those stars that were visible to the ancient Greeks are located in constellations.