High school geography frontal cyclone related knowledge points! Don't understand! Please advise.

The front is the interface formed by the intersection of cold and warm air, and it is a narrow and inclined transition zone. Cyclones are low pressure. In the northern hemisphere, it is a weather system in which air flows counterclockwise from the periphery to the center. The southern hemisphere is the opposite.

This is actually very easy to understand, that is, the wind around the cyclone center. These winds swirl and blow to the center of the cyclone. One side of the wind blows from the high pressure area to the low pressure area, that is, the wind in the low temperature area moves to the high temperature area, just like the wind blowing from the north and south poles to the equator. Cold air drives away hot air, so there is cold front weather and cooling and depressurization. On the other hand, it blows from the equator to the north and south poles, and the low pressure blows to the high pressure area, that is, hot air drives away cold air. At this time, there is warm front weather, continuous precipitation, rising temperature and air pressure.

Before the cold front crossed the border, the weather was fine and the temperature was high. It is rainy and windy when crossing the border, with continuous precipitation and low temperature. After crossing the border, the temperature rose and the weather was fine.

Before the warm wind crossed the border, the weather was sunny and the temperature was low. It was rainy for more than ten days, mostly heavy rain. After crossing the border, the temperature rose and turned fine.

It is the process of air cooling and heating, and there will be liquefaction and precipitation in the alternation of cooling and heating. The quasi-static front is that the cold and warm air are evenly matched, and no one can push anyone away, so it rains, just like the rain in the rainy season is caused by the quasi-static front. Frontal cyclones only appear in low-pressure systems. When the high pressure is an anticyclone, the airflow is in a state of horizontal divergence, that is, the wind spreads from the center of the high pressure to the surrounding areas, so there will be no cold and warm air masses meeting, and there will be no front system. As for the frontal system, it is warm in the east and cold in the west, that is to say, there is a cold front in the west and a warm front in the east, because the wind in the west blows from north to south, while the wind in the east blows from south to north. Remember the characteristics of the northern hemisphere first, and so on. To put it bluntly, these are all related to solar radiation and differences in land and sea properties. The equator is heated the most, and the air expands to form a low pressure area. The poles are less heated, and the air is cold and heavy, forming a high-pressure area. The air pressure difference between high and low pressure leads to wind flow, and then the surface difference causes various climate and weather phenomena. After learning this, it is easy to understand. Then we should observe nature more. I observed the weather changes for two months while studying the frontal system. I can basically know the causes of sunny and rainy weather, and I can also analyze why it is like this by watching the weather forecast. Learning geography well is very useful. I hope you come on!