Rain is the precipitation in the form of water droplets with a diameter greater than 0.5 mm.
It is one of the six main types of rainfall on Earth.
Rain interesting facts
1. 1 mm of rainfall can be converted to 1 liter of water per square meter.
2. There are three different intensities of rainfall: “light rain” is when less than 2.5 mm of rain falls per hour, “moderate rain” from 2.5 to 7.5 mm per hour, “heavy rain” above 7.5 mm for an hour.
3. It is possible to generate artificial rainfall. However, they are not abundant. Up to 10 mm of water can be reached in a maximum of 15 minutes of rain.
4. Rain also occurs on other planets in the solar system, with the difference that the droplets are not water, but methane, neon, iron or sulfuric acid.
5. The most common rain clouds are cirrus, cumulus and stratus.
6. Before a raindrop hits the ground, it spends an average of 8 days in the air.
7. The annual amount of precipitation in rainforests ranges from 2,500 to 4,500 mm.
8. Large rain drops can accelerate to over 30 km/h.
9. The phenomenon of acid rain was first described by Robert Boyle in 1692.
10. On July 4, 1956, in Unionville, Maryland (USA), 31.2 mm of rain fell in one minute.
11. On June 22, 1947, 305 mm of rain fell within an hour in Holt, Missouri (USA).
12. On January 7-8, 1966, 1,825 mm of rain fell in Cilaos on Réunion (overseas department of France).
13. Between 1860 and 1861 in Meghalaya, India, 26,470 mm of rain fell during the year.
14. Average annual rainfall on land is 715 mm (990 mm over the entire surface of the Earth).
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Are there any places in the world where it doesn’t rain?
It does not rain in areas with a polar climate with constant subzero temperatures.
Where does the most rain fall?
In the equatorial zone.
What is virga?
This is precipitation that does not reach the ground (it starts to rise back up due to evaporation).
What is cabbage soup?
It is a gentle, fleeting rain with fine droplets.
What is acid rain?
These are rains with a low pH level (below 5.6).
Why are all drops of the same size?
When a larger droplet forms, it splits into smaller ones as it falls.