Rizhao solar terms

(1) omitted

2 winter solstice, 23 26 south latitude, 45 east longitude.

(3) A, A

(4) CE,18h

(5)7/8

Test analysis:

(1) Seen from above the S

(1) omitted

2 winter solstice, 23 26 south latitude, 45 east longitude.

(3) A, A

(4) CE,18h

(5)7/8

Test analysis:

(1) Seen from above the South Pole, the rotation is clockwise, so the short lines outside the circle are marked with arrows, indicating clockwise direction. According to the day-night distribution in the figure, the solar altitude angle is 0 on the termination line (the solar rays coincide with the horizon), and the central meridian of the hemisphere is parallel to the solar rays during the day. Therefore, sunlight enters from the right side in parallel.

(2) In the picture, there is extreme sunlight in and around the South Antarctic Circle. When the sun shines directly on the Tropic of Capricorn (23 26' s) and the meridian of the sun is 12 (the central meridian of the hemisphere in the daytime), that is, the meridian at point A is clockwise, from 0 to180. To sum up, the direct point of the sun is (23 26' s, 45 E).

(3) Distribution law of rotation linear velocity: decreasing from equator to poles. The latitude of point B in the picture is higher than that of point A, so the linear velocity of point B is lower than that of point A. Latitude distribution of midday sun height angle: there are direct points on the north and south sides, and the farther away from the direct point of the sun, the smaller H is. In this picture, the sun is directly on the tropic of Capricorn, point A is close to the direct point, and H is higher than the midday sun height angle of point B.

(4) Morning line judgment: Looking along the rotating direction, the night enters the day. In the figure, the rotation direction is clockwise, so CE is the morning line and DE is the faint line. According to the characteristics of the terminator line, the terminator line bisects the equator, and the equator divides day and night, so the meridian where the dark line intersects the equator is 18, so the longitude of point D is 18, while the longitude difference between point D and point F is 45, and the time difference is 3 hours (east plus west minus), so the local time of point F is 2 1, because point F is in.

(5) To calculate a new day, key students should find out the date line (zero meridian, 180), and 180 is artificially set and does not move, so students should find out the zero meridian (the central meridian of the night hemisphere). According to the distribution characteristics of the meridian in the figure, the meridian at 0: 00 is 135 W, so the range of the new day is 65. Therefore, a new day accounts for 7/8 of the world.