Question

how many degrees does the moon move per day relative to the fixed stars?
○ 0°
○ 1°
○ 12°
○ 23°
○ 360°
how many days does it take for the moon to return to its original location relative to the fixed stars?
○ 1
○ 27.3
○ 29.5
○ 365

Explanation:

First Question (Degrees per day)

The Moon's sidereal period (relative to fixed stars) is about 27.3 days to complete a 360° orbit. So per day, it moves $\frac{360^\circ}{27.3}\approx13^\circ$, but the closest option is $12^\circ$ (likely due to approximation or question context). Wait, actually, more accurately, the Moon moves about 13.18° per day, but among the options, 12° is a common approximation or the intended answer here. Wait, no—wait, the options: 0,1,12,23,360. Wait, maybe I miscalculated. Wait, the sidereal month is ~27.3 days for 360°, so 360/27.3 ≈13.2°, but the option 12° is there. Wait, maybe the question has 12° as the answer. Alternatively, maybe the question is simplified. Let's check the options again. The correct answer here is 12° (option C: 12°).

The sidereal period of the Moon (time to return to original position relative to fixed stars) is approximately 27.3 days. The other options: 1 day is too short, 29.5 is the synodic period (lunar phases), 365 is Earth's year. So the correct answer is 27.3 (option B).

Answer:

C. 12°

Second Question (Days to return)