The following picture shows "a schematic diagram of the ground weather in a certain area at a certain time". Look at the picture and answer the following questions. Question 1: the wind direction of m

The following picture shows "a schematic diagram of the ground weather in a certain area at a certain time". Look at the picture and answer the following questions. Question 1: the wind direction of m in the picture is a. northeast B. southeast C.

Question 1:C?

Question 2: D.

Test analysis:

Question 1: First, make the isobar perpendicular to point M, and mark the direction of pressure gradient force from high pressure to low pressure. In the northern hemisphere, due to the influence of geostrophic yaw force, the airflow shifts to the right, so it can be directly judged that point M should be northwest wind, and C is selected.

Question 2: Find the center of the low pressure in the picture, draw the trough line of the low pressure, and judge that the airflow around the low pressure is counterclockwise. It can be seen that the cold air in the north pushes the front to move in the direction of warm air in the south, and the precipitation behind the front is dominant, so it is a cold front weather process, and D should be chosen.