(20 10? Xuzhou) is shown as "the day and night distribution map of some parts of the earth", and the shadow indicates night. Complete the following questions accordingly. (1) The section of Xuzhou at

(20 10? Xuzhou) is shown as "the day and night distribution map of some parts of the earth", and the shadow indicates night. Complete the following questions accordingly. (1) The section of Xuzhou at this time. (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;

(4) The longitude range of the western hemisphere is 160 E ← 180 ← 20 W, and the longitude range of the western hemisphere in the figure is 160 E- 180.

So the answer is:

(1) winter solstice; m；

(2) small;

(3)P；

(4)