How much of the night sky is north of the celestial equator?
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 2Which 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.
Question 3Do the constellations visible in the sky at a particular time of night (say 9 pm) follow a seasonal pattern?
a. No, the same constellations are visible at 9 pm on any clear night of the year.
b. No. As the year progresses, the constellations visible at 9 pm are the same but their shapes change.
c. Yes, at 9 pm during a clearwinter night ALL of the constellations you can see are different from the ones that appear at the same time during a summer night.
d. Yes, at 9 pm during a summer night most of the constellations you can see are different from those you can see on a winter night. However, there are some constellations that are visible all year long.
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