Rain occurs when water vapour within clouds cools and falls, this is called condensation. Rain is a type of precipitation. It starts when the sun heats the water of rivers, lakes, etc. so that the water vapour ascends to the troposphere and because of the low temperature, occurs the condensation, it cools and turns into tiny water droplets that having a moderated amount, it happens the clouds. Then when there are a large amount of water droplets, the clouds begin to dark theirselves until they cannot hold the droplets anymore, that's when it starts to precipitate. If collected over time, rain can cause flooding.
Levels of Rain
- Mist - A form of water vapour almost becoming rain, it is found when the air down is so cool and the water vapour cools itself. Often found near waterfalls.
- Sprinkle - A light rain so soft you can most likely not even feel it.
- Drizzle - A light rain. Drops must be close together and around 1/50th of an inch in which to be considered this type of rain.
- Shower - A short passing rain shower.
- Rain - A steady form of Rain. Rain drops are larger and are farther spaced than a Drizzle.
- Heavy Rain - A lot of rain for a short or long period of time.
- Torrential - Heavy rain that limits visibility. It is a long continuous downpour.
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