Answer:
In coastal areas, during daytime, there is a regular flow
of cool air from the sea towards the land. At night, there is a reverse flow of
air from land to sea. This happens because during the daytime, land gets heated
faster than water and radiated heat from land, heats the air above it. The hot
air rises and creates an area of low pressure.
Sea water does not get heated so rapidly, so air above the
sea is comparatively cool A high pressure area forms above sea water as
compared to air over land.
Therefore, cooler air over the sea, flows towards the land
(region of low pressure) area. The movement of air from one region to the other
creates winds.
Movement
of wind from sea to land during day and from land to sea during night
During the night, reverse flow of air occurs. Land cools
down rapidly and the air above the land becomes cooler. Sea water cools down
slowly so, the air above the sea is hotter and has a lower air pressure as
compared to air pressure above the land. Therefore, cooler air present over
land flows towards sea.
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