solar term

( 1)23° 26′N？ Summer solstice

(2) Sunrise

(3) Party A, Party B and Party C

(4) 12?

(5)24

Test analysis:

Question (1), as can be seen from the figur

( 1)23° 26′N？ Summer solstice

(2) Sunrise

(3) Party A, Party B and Party C

(4) 12?

(5)24

Test analysis:

Question (1), as can be seen from the figure, at this time, the latitude of the direct point of the sun is the Tropic of Cancer, and the Arctic Circle is extremely daytime, so the solar term is the summer solstice.

Question (2), according to the direction of the earth's rotation, point A is on the morning line at this time, just at sunrise.

Question (3): On this day, the sun shines directly on the Tropic of Cancer, and the height of the sun is the highest at noon at point A of the Tropic of Cancer, which is 90 degrees. The farther away from the tropic of cancer, the smaller the noon sun height, so the order of noon sun height in A, B and C is A & gtB& gt；; C.

Question (4), the point D in the figure is on the meridian where the direct point of the sun is located, so the local time of D at this time is 12 hour.

Question (5): Point C is located on the Arctic Circle, and the sunrise time is 0 o'clock and the sunset time is 24 o'clock, so the day length of Point C is 24 hours.

Comments: This question is less difficult. The key to solve this problem is to judge the solar terms according to the latitude where the direct point of the sun is located and the phenomena in the polar circle. In addition, this topic can also examine the speed of the earth's revolution, the comparison of angular velocity and linear velocity of each point and other knowledge points.