Explorations: Introduction to Astronomy (Arny), 6th Edition

Chapter 1: The Cycles of the Sky

Online Quiz

1
What is the celestial sphere?
A)An observatory dome.
B)The Sun.
C)The Earth.
D)The imaginary sphere of the sky, on which stars lie.
2
What do we call a specific pattern of stars in the sky, often named for an animal?
A)A cluster.
B)A star animal.
C)A constellation.
D)The ecliptic.
3
What is the celestial equator?
A)A band of constellations through which the planets and Sun appear to move.
B)The line that the sun traces across the celestial sphere.
C)An imaginary line in the sky, directly above the Earth's equator.
D)The cycle of lunar phases.
4
What do we call the line that the Sun traces across the celestial sphere?
A)The celestial equator.
B)The Mason-Dixon Line.
C)The extension of the Earth's equator on the celestial sphere.
D)The ecliptic.
5
What causes the change of the constellations with the seasons?
A)It is caused by the Earth's motion around the Sun.
B)It is caused as the constellations move amongst themselves.
C)This is merely an illusion caused as the length of the day changes.
D)The cycle of lunar phases.
6
The Moon takes approximately ____ to go through a cycle of phases.
A)1 day
B)7 days
C)30 days
D)90 days
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