What shape are raindrops?

The shape of raindrops is shown in the following figure:

Formation of raindrops:

Clouds made up of small water droplets (ice droplets) are called water clouds (ice cloud). When the cloud is water cloud or ice cloud, whether the cloud can precipitation depends on whether a large number of raindrops can be formed in a short time (a raindrop is about one million water drops in the cloud). There are two ways for water droplets in clouds to form raindrops.

Either the water droplets in the cloud are constantly condensing and getting bigger, or the clouds collide with each other, so that the water droplets in the cloud are combined with each other and the quality becomes bigger. When the mass of water droplets is so great that the updraft can't "hold" them, the water droplets fall and form rain. In fact, it is difficult for water droplets to become raindrops falling enough by their own condensation, and the main means of growth is through the combination of water droplets.

Extended data:

The main function of rainwater:

1、? Rain is an indispensable part of the earth, and it is the only way for almost all terrestrial plants far away from rivers to replenish fresh water.

2. Rainwater can irrigate crops, which is beneficial to afforestation.

Rain can reduce the dust in the air and lower the temperature.

4. Rainwater is beneficial to reservoir water storage, groundwater recharge and river water replenishment, and is beneficial to power generation and shipping.

Rain can isolate the noisy world, create a quiet environment, hypnotize and wash the streets.

6. Rainwater can wash away ground garbage, dilute toxic substances and purify the environment.

7. Rain can purify the air and make you feel cheerful after rain.

Rainfall:

1 and the rainfall within 24 hours is less than 10.0 mm, or the rainfall within one hour is less than 2.5 mm, which is called light rain.

2. If the rainfall within 24 hours is less than 10.0~24.9 mm, or the rainfall within one hour is less than 2.6~8.0 mm, it is called moderate rain.

Rainstorm is called when the rainfall within 3.24 hours is less than 25.0~49.9 mm or less than 8. 1~ 15.9 mm within one hour.

4, 24 hours of rainfall is less than 50.0~99.9 mm, or more than 16.0 mm, called a rainstorm.

5. The 24-hour rainfall is less than 100.0~ 199.9 mm and reaches or exceeds 200.0 mm, which is called a torrential rain. When the precipitation is less than 0.05 mm or there is precipitation before observation, but it is not observed due to rapid evaporation, the precipitation should be recorded as 0.0 mm and cannot be omitted, because this is a rainfall process.

6. Floods and rainstorms: Floods and floods caused by torrential rains are rare natural phenomena. According to the way of rainfall, it can be divided into thunderstorm, topographic precipitation, typhoon rain and cyclone rain.

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