Question

What is the basis for the formation of winds due to heating of different areas on Earth ?

• A. The air in cold temperature regions gets cooled, expands and becomes more dense and rises up. It's place is taken by heavier air from adjacent regions.
• B. The air in cold temperature regions gets cooled up, expands and becomes less dense and rises up. It's place is taken by heavier air from adjacent regions.
• C. The air in high temperature regions gets heated up, expands and becomes less dense and rises up. It's place is taken by heavier air from adjacent regions.
• D. The air in high temperature regions gets heated up, contracts and becomes more dense and rises up. It's place is taken by heavier air from adjacent regions.

Answer 1

Answer: (C)

The air in high temperature regions gets heated up, expands and becomes less dense and rises up. It's place is taken by heavier air from adjacent regions.

In summer, near the equator the land warms up faster and most of the time the temperature of the land is higher than that of water in the oceans. The air over the land gets heated and rises. This causes the winds to flow from the oceans towards the land. And we know air expands on heating and and becomes less dense and therefore rises up.