Chapter 2

1. Which of the following coordinates describes the angular distance of an object north or south of the celestial equator? azimuth
right ascension
2. Suppose there is a star which rises at 10 p.m. tonight. At what time did it rise one month ago? 11 p.m.
9 p.m.
8 p.m.
3. An observer in Quito, Ecuador (latitude 0 deg) sees the Sun at the zenith at noon on which day(s)? summer and winter solstice
spring and fall equinox
never - impossible
all days
only on June 21
4. The sun moves eastward among the stars at the rate of about one degree per hour
5. The time that your wristwatch keeps is apparent solar time
mean solar time
sidereal time
Greenwich mean time
a hot time
6. The occurrence of seasons on the Earth is due to the Earth being closer to the Sun in summer
the Earth changing its rotation rate during the year
the Earth's axis pointing in different directions during the year
the Earth's axis being inclined to the ecliptic
the solar wind particles in the Earth's upper atmosphere
7. At approximately what time does the new moon rise? sunset
8. Relative to the stars, the moon remains stationary
moves eastward, then westward during a month
moves westward
moves eastward
9. In which of the following circumstances is it possible to observe the full moon? setting at noon
rising at sunset
high in the sky at dawn
setting at midnight
10. Which of the following is true of the motion of the planet Mars among the stars? all retrograde loops occur in the same constellation
all retrograde loops have the same shape
retrograde loops always are separated by the same interval of time
retrograde loops occur when Mars is in conjuction (near the sun in the sky)