The ____ of the Moon and Sun vary slightly because the orbits of the Moon and Earth are slightly elliptical.
a. angular distance
b. linear diameter
c. linear distance
d. angular diameter
e. angular momentum
Question 2
If the Moon is too far from Earth during a solar eclipse, the _____ does not reach Earth's surface.
a. umbra
b. ecliptic
c. prominence
d. penumbra
e. solar disk