Read the material 1, table 2 and table 3 and answer the following questions. (14 points) Material 1: The rising and setting directions of the sun at the ground level vary with seasons and latitudes, s

Read the material 1, table 2 and table 3 and answer the following questions. (14 points) Material 1: The rising and setting directions of the sun at the ground level vary with seasons and latitudes, sunrise and sunset. (1) north; South; Big (6 points) (2) increase; 0。 (4 points)

(3) First get bigger and then get smaller (2 points); And the summer solstice is the largest (2 points)

Test and analysis: (1) According to the data directly, when the direct point of the sun is located in the northern hemisphere, that is, between the vernal equinox and the autumnal equinox, the declination angles of the sunrise and sunset points in Beijing are northerly. When the direct point of the sun is located in the southern hemisphere, that is, from the autumnal equinox to the vernal equinox, the declination angles of sunrise and sunset in Beijing are all southerly. The higher the latitude of the direct point of the sun, that is, the greater the deviation angle of summer solstice and winter solstice relative to other solar terms. (2) According to the data in Table 3, the higher the latitude on the same date, the greater the deviation angle between sunrise point and sunset point. In the spring and autumn period, the sunrise and sunset direction is due east and west, that is, the deflection angle is 0. (3) Combined with the conclusion of (1), in the same place, the deviation angle of sunrise and sunset is the largest in summer solstice and winter solstice, so ∠ AOB is the largest on June 22nd, so it should be observed that ∠ AOB first increases and then decreases.

Comments: This question is less difficult. Students can solve the problem as long as they can carefully summarize and analyze the table resources, and the answer lies entirely in the information of the topic.