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Who gives energy to the air to move?
Air moves because of change in atmospheric pressure, due to the uneven heating of Earth by the Sun.
When the sun's energy heats up a part of the ground or the sea, the air particles heats up and rises creating a low pressure area underneath it. Because of this uneven heating, the air pressure do not remains uniform throughout the atmosphere, and the atmosphere constantly flows, like a fluid in a container, air rushes into such low-pressure areas from cooler, high-pressure ones, and the movement of the air creates wind. The strength of the wind depends on the pressure difference. A small difference produces a gentle breeze, while a large difference may produce a storm.
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