Why does air mainly move in general atmospheric circulation?
Answer and explanation
Correct answer: Differences in air pressure
Air moves because a pressure gradient exists between two places. It naturally accelerates from areas of relatively high pressure toward areas of relatively low pressure. In global circulation, unequal solar heating produces unequal temperatures, which create pressure belts and pressure differences. The pressure-gradient force initiates wind movement, while the Coriolis force changes its direction and friction slows it near the surface. Thus, option B states the immediate cause of air movement.
Frequently asked questions
What is the correct answer to this question?
Differences in air pressure
Why is this the correct answer?
Air moves because a pressure gradient exists between two places. It naturally accelerates from areas of relatively high pressure toward areas of relatively low pressure. In global circulation, unequal solar heating produces unequal temperatures, which create pressure belts and pressure differences. The pressure-gradient force initiates wind movement, while the Coriolis force changes its direction and friction slows it near the surface. Thus, option B states the immediate cause of air movement.
Which subject and chapter does this question cover?
This is a Class 12 Geography question. Chapter: Atmospheric Circulation and Weather Systems.
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