The picture below is a simplified diagram of the surface weather situation in a certain area at a certain time. Read the pictures and complete the questions. Small question 1: The wind direction at

The picture below is a simplified diagram of the surface weather situation in a certain area at a certain time. Read the pictures and complete the questions. Small question 1: The wind direction at location C in the picture is ( ) A. Northeast wind B

Small question 1: C

Small question 2: D

Test question analysis:

Small question 2:D p>

Quick question 1: In the picture, place C is located in a high-pressure control area, and the horizontal gradient force is from high pressure to low pressure. Under the influence of the rightward geostrophic deflection force of the Northern Hemisphere, the wind direction in place C is northwest. So choose C.

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Quiz 2: The picture shows a frontal cyclone in the Northern Hemisphere. The passing of a frontal cyclone often causes rainy weather. According to the anticyclonic airflow in the Northern Hemisphere direction of movement (clockwise from the center to the surroundings), the front belongs to the cold front; the precipitation in A is behind the cold front, and the intensity of the precipitation is relatively large. After the cold front passes through, it is controlled by a single cold air mass, causing the temperature to drop and the air pressure to rise. A is wrong; precipitation in B occurs in front of the warm front. Therefore B is wrong. The isobars in D are sparse, while the isobars in C are dense, so the wind in C is stronger than in D. C is wrong; Dingdi is controlled by a single warm air mass, with high temperature and low air pressure. Correct choice B.

Comments: This question uses a simple diagram of the surface weather situation in a certain area at a certain time as a carrier to examine frontal cyclones and weather. The difficulty is moderate. Students are required to understand and skillfully memorize frontal cyclones and weather conditions.