The first quarter moon rises
a. at about noon.
b. at sunset.
c. at sunrise.
d. at about midnight.
e. during the second week of each calendar month.
Question 2
An eclipsing binary will
a. be more luminous than a visual binary.
b. also be observed as a spectroscopic binary.
c. give off most of its light in the infrared.
d. show a constant Doppler shift in its spectral lines.
e. show two stars with variable proper motion.
