Explanation Text : How does Rain Happen?
Rain is the primary source of fresh water for most
areas of the world, providing suitable conditions for diverse ecosystems, as
well as water for hydroelectric power plants and crop irrigation.
The phenomenon of rain is actually a water circle.
The concept of the water cycle involves the sun heating the Earth's surface
water and causing the surface water to evaporate. The water vapor rises into
the Earth's atmosphere. The water in the atmosphere cools and condenses into
liquid droplets. The droplets grow until they are heavy and fall to the earth
as precipitation which can be in the form of rain or snow.
However, not all rain reaches the surface. Some
evaporates while falling through dry air. This is called virga, a phenomenon
which is often seen in hot, dry desert regions.
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