Science 2.7 5 air pressure system in the second day of junior high school?

High-pressure system: the high-pressure area is sunny.

Low pressure system: it is rainy in low pressure area.

Cold front system: a front that moves to the side of warm air.

When crossing the border: rain, strong wind, cooling (air pressure rising) and other weather.

After crossing the border: The weather is clear, and the temperature drops (the air pressure rises) because there is still cold air after the cold air passes through the border, which reduces the temperature.

Warm front system: a front that moves to the cold air side.

Before crossing the border: the weather such as rainfall and temperature rise (air pressure drop) is rising because there is still warm air residue after crossing the border, which makes the temperature rise.

After crossing the border: the weather is fine and the temperature rises (the air pressure decreases).

Typhoon: precipitation, cooling and windy weather.

I'm also in grade two. Our teacher just taught me.