(26 points) Look at the picture and complete the following questions. (1) This picture shows the solar terms in the northern hemisphere, showing the sunshine. (5 ...

Question 1: summer solstice

(26 points) Look at the picture and complete the following questions. (1) This picture shows the solar terms in the northern hemisphere, showing the sunshine. (5 ...

Question 1: summer solstice (2 points) (drawing light) omitted (3 points)

Question 2: Faint 18(4 points) 16 53 56(3 points)

Question 3: D, D and E(6 points)

Question 4: (23 26' n, 0) (4 points)

Question 5:0? 24(4 points)

Question 6: The day is the longest, the night is the shortest, and there are extreme days in the Arctic Circle and its north. (4 points)

Test analysis:

Question 1: The terminator line is tangent to the polar circle, and there is an extreme day in the Arctic Circle, so it is judged as the summer solstice in the northern hemisphere, and the sunshine should be perpendicular to the terminator line.

Question 2: The figure follows the direction of rotation, and will enter the night hemisphere from the daytime hemisphere after passing through the AB line, so it is judged that the AB line is a dark line. Point E is the intersection of the dark line and the equator, which is 18: 00. The time of 0 meridian is 12, so the time of 73 29' E is 4 hours, 53 minutes and 56 seconds earlier than that of 0 meridian.

Question 3: The local time on the same meridian is the same, so the local time at point C and point D is the same. The tropics should be located between the Tropic of Cancer, so the points D and E coincide.

Question 4: From summer to the sun, the latitude of the direct solar point is on the tropic of cancer, and the longitude of the direct solar point, namely 12, is 0 longitude.

Question 5: Point A in the picture happens to be the extreme day, so the sunrise is 0 o'clock. There are 24 hours a day.

Question 6: At this time, the direct point of the sun is located in the northern hemisphere, so the days in the northern hemisphere are long and the nights are short. The farther north, the longer the days, and the extreme sunrise appears in the Arctic Circle and its inner region.

Comments: The key to solve this problem is to master the basic characteristics of the termination line from the bisector to the sundial, the method of judging the morning line and the dark line, and the distribution law of the length of day and night and the height of the sun at noon by using the position of the direct point of the sun. This topic can also be combined with the comparison of angular velocity and linear velocity of the earth's rotation; The judgment of the height of the sun and other content design questions.