The night sky is very dark, except for a small, thin arc of thr moon. According to the calendar, the full moon occurred just less than two weeks ago. What phase of the moon will happen next?

The moon that continues after the full moon is the waning moon.

Explanation:

The Moon decreases, or decreases, in the period from the full moon to the next new moon, each day identifying its luminous surface and, therefore, the light it reflects. In the curves of the months this strip becomes darker and darker, until it becomes smaller and then the cycle begins again every month.