As shown in the map of day and night distribution in some parts of the earth, shadows represent night, and the following problems are completed accordingly. (1) The solar terms in Xuzhou at this time

As shown in the map of day and night distribution in some parts of the earth, shadows represent night, and the following problems are completed accordingly. (1) The solar terms in Xuzhou at this time are _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. (1) The Arctic Circle in the area shown in the figure is a polar night phenomenon, that is, the winter solstice in the northern hemisphere. At this time, the solar terms in Xuzhou are the solstice in winter. On this day, among M, N and P, M has the longest night and the highest latitude.

(2) The winter solstice is the longest night in the northern hemisphere, and the shadow range in the picture will be smaller the next day;

(3) In the three places M, N and P in the picture, the place where the direct sunlight is in a year is P, which is located in the tropics;

So the answer is:

(1) winter solstice; m；

(2) small;

③p。