Weather change curve

Question 1:D

Question 1:C

This topic studies common weather systems and their effects on the weather.

Question 1: Judging directly from the pressure change process shown in the diagram, ① it is a warm front crossing the border; ② High-pressure transit; ③ Cold front crossing; ④ Low-pressure transit. The weather will be fine only if high-pressure control prevails downstream.

Question 2: Based on the above analysis, the circulation system with low convergence and high divergence should be a low pressure system.

Question 3: Based on the analysis of the above problems, ① the warm front crosses the border, and continuous precipitation is formed when the warm front crosses the border; ② downward flow is dominated by high pressure; ③ Cold front. After the cold front crossed the border, the temperature dropped, the air pressure rose and the weather turned fine. (4) low pressure, low pressure transit, prevailing updraft, easy to form rainy weather.