What is the formation process of raindrops?

1. Rain is caused by atmospheric circulation disturbance. The water on the land and ocean surface evaporates into water vapor, which rises continuously and becomes small drops when it reaches a certain height.

2. Small water droplets gather into clouds, and the clouds collide with each other, and the water droplets are getting bigger and bigger. It is a natural phenomenon that the air can't bear it and it will rain.

3. The speed of rain can be fast or slow, and the scale can be large or small. Rainfall is a very important part of the earth's water cycle.