Clouds composed of liquid water droplets (including supercooled water droplets) are called water clouds. If the conditions for cloud droplets to grow into raindrops are met in the water cloud, and the raindrops have a certain falling speed, then it is rain or Mao Mao rain that falls.

(B) the formation of snow

Ice cloud is made up of tiny ice crystals. When these small ice crystals collide with each other, the surface of the ice crystals will heat up and melt, and they will stick together and freeze again. Repeat this for many times, and ice crystals will increase. When small ice crystals grow up, they overcome the resistance and buoyancy of air and fall to the ground. This is snow.

(C) the formation of clouds

The formation of clouds is mainly caused by water vapor condensation. Clouds floating in the sky are composed of many tiny water droplets or ice crystals, some of which are mixed together. Sometimes it also contains some big raindrops and ice particles. The bottom of the cloud does not touch the ground and has a certain thickness.

(4) Formation of fog

When the visibility in the atmosphere is lower than 1 km due to the condensation of suspended water vapor, meteorology calls this weather phenomenon fog.

(5) the formation of dew

In summer, the ground is very hot and there is a lot of water vapor. When the temperature is low before dawn, water vapor will condense into dew on leaves and flowers.

(vi) Frost formation

In the winter morning, the temperature on the ground is very low, and when the water vapor is cold, it condenses into frost on the ground.

(7) Formation of hail

When the temperature is below zero degrees Celsius, excess water vapor will condense into fine ice crystals. These water droplets and ice crystals gather together and float in the air to become clouds.

The relationship between rain, snow, fog, dew, frost and hail and human life

Rain can alleviate human drought and water farmland. However, if there is too much rain, floods will also cause floods, threatening the safety of human life and property.

Melting snow water in early spring can water crops once, which is beneficial to the growth of crops. However, like the winter snowstorm in Inner Mongolia, the temperature will drop to MINUS 30-40 degrees, which will cause a large number of sheep to freeze to death and bring great losses to local herders.

For tea-producing mountainous areas, famous tea can be baked because of the fog.