Wind is actually produced in large part by the
warming of the sun. When air warms up due to
sunlight, it rises, and cold air rushes in
underneath to fill the void. It´s a very dynamic
process with air constantly exchanging heat with
colder air and with the earth and oceans, and with
air constantly rising as it warms, sinking as it
cools, and filling in voids because as a gas, one
of its properties is to expand to fill any volume.
The moving of the air in this manner, is what wind
is on the surface of the earth.
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