How 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.
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.