A third quarter moon is visible
a. near the eastern horizon just before sunrise.
b. near the eastern horizon just after sunset.
c. in the southern sky at sunrise.
d. in the southern sky at sunset.
e. from sunset until sunrise.
Question 2
The ____ of a star is a measure of the total energy radiated by the star in one second.
a. color
b. apparent visual magnitude
c. luminosity class
d. spectral type
e. luminosity