The synodic period of the moon
a. is about 27.32 days long.
b. is the period of time for the moon to orbit Earth once with respect to the stars.
c. is the period of time between successive eclipses at a given location on Earth.
d. is the period of time from when the moon rises until the moon rises again the next night.
e. none of the above
Question 2Absolute visual magnitude is
a. the apparent magnitude of a star observed from Earth.
b. the luminosity of a star observed from a distance of 1000 pc.
c. the apparent magnitude of a star observed from a distance of 10 pc.
d. the luminosity of a star observed from Earth.
e. c and d
Question 36The sideral period of the moon
a. is about 27.32 days long.
b. is the period of time for the moon to orbit Earth once with respect to the stars.
c. is the period of time between successive eclipses at a given location on Earth.
d. is the period of time from when the moon rises until the moon rises again the next night.
e. a and b above
Question 4Parallax would be easier to measure if
a. Earth's orbit was larger.
b. the stars were farther away.
c. Earth moved faster along its orbit.
d. all of these
e. none of these
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