Question

(1) In regards to the moon, waxing means what?
(a) The visible portion of the moon is shrinking
(b) The visible portion of the moon is growing
(c) The moon is getting closer to the earth

(d) The moon is getting farther away from the earth

(2) What is the reason for the answer to number 2?

(a) linear acceleration

(b) string theory

(c) the strong nuclear force

(d) gravity lock

(3) As seen from the earth, the moon drifts eastward relative to the stars; that is, on a given night the moon appears eastward of its position the night before at the same time. Through what angle does the moon move eastward each day relative to the stars?

(a) 360 degrees

(b) 36 degrees

(c) 13.2 degrees

(d) 10.5 degrees

Answer 1

1) Answer b)
Because waxing just means the illuminated portion of the moon is getting larger every night until the full moon . And if the visible portion is getting smaller every day , it is known as Waning.

2) Answer d) Gravity Lock

Gravity/Tidal locking is the phenomenon by which a body has the same rotational period as its orbital period around a partner. So, the Moon is tidally locked to the Earth because it rotates in exactly the same time as it takes to orbit the Earth. That is why we only see one side of the Moon.

3) answer C)13.2 degree

As we know , moon takes approximately 27 days to complete one revolution around earth.
One revolution means 360° degree.
So for each day , moon covers 360/27= 13.3°
So our answer is right.