1. Oblate spheroid
2.Yes, The Moon appears to change shape because we see different amounts of the lit part as the Moon orbits Earth. When the Moon is between Earth and the Sun, the lit side is hidden from us. As it moves around Earth, more and more of the lit side comes into view.
3.The Moon gradually looks a little different each day, depending on where it is in its orbit. The Moon's lunar cycle begins when the Sun, the Moon, and Earth are aligned (the Moon is between Earth and the Sun) and the illuminated hemisphere of the Moon faces away from Earth.
4-9.
New moon
Waxing crescent
First quarter
Waxing gibbous
Full moon
Waning gibbous
Last quarter
Waning crescent
10.The Moon doesn't emit (give off) light itself, the 'moonlight' we see is actually the Sun's light reflected off the lunar surface. So, as the Moon orbits the Earth, the Sun lights up different parts of it, making it seem as if the Moon is changing shape.
Hope it helps (◠‿◕)
