The following picture shows the position of the earth in the orbit of revolution during the 24 solar terms in China. The number of days between two adjacent solar terms is about 15 days. Answer the fo

The following picture shows the position of the earth in the orbit of revolution during the 24 solar terms in China. The number of days between two adjacent solar terms is about 15 days. Answer the following questions

Question 1:A

Question 2:B

Test analysis:

Question 1: Investigate the variation of the length of day and night. When the sun shines directly on the Tropic of Cancer (summer solstice in the northern hemisphere), the days in the northern hemisphere are long, the nights are short, the days in the northern hemisphere are the longest, the nights are the shortest, and the extreme days are the largest. On the contrary, it is the smallest. When the sun shines directly on the equator (vernal equinox, autumnal equinox), the world is divided equally between day and night.

Question 2: Investigate the significance of earth movement. When the sun shines directly on the Tropic of Capricorn (winter solstice in the northern hemisphere), the days in the northern hemisphere are shorter and the nights are longer, and the solar radiation in the northern hemisphere is the least in a year. From winter to the future, the direct position of the sun moves northward, the days in the northern hemisphere get longer and longer, the solar radiation in the northern hemisphere increases and the sun rises.