Question

The Moon is seen to keep one face toward Earth at all times. If viewed from a point directly above the plane of the planetary system, how does it have to rotate to maintain this alignment?

Answer 1

It must rotate once in approximately 27 days (once per month), or once per orbit around the Earth

Step-by-step explanation:

The moon has only one of its sides facing the earth always. To keep up with this, it must travel round the earth in an orbit that takes approximately 27days