CURRENT AFFAIRS

2023

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Compared to air above water, air above land is:
A
cooler and less dense
B
cooler and more dense
C
warmer and less dense
D
warmer and more dense
Explanation: 

Detailed explanation-1: -Air above the respective land and water surfaces is warmed or cooled by conduction with those surfaces. During the day, the warmer land temperature results in a warmer and therefore, less dense and lighter air mass above the coast as compared with the adjacent air mass over the surface of water.

Detailed explanation-2: -Sea breezes occur during hot, summer days because of the unequal heating rates of land and water. During the day, the land surface heats up faster than the water surface. Therefore, the air above the land is warmer than the air above the ocean.

Detailed explanation-3: -Land breezes usually blow dry winds. Sea breeze contains more amount of moisture due to the particles absorbed from the water bodies. Hence, both the land breeze and sea breeze occur near water bodies. But, the pace of the land breezes’ is slower when compared to the sea breeze.

Detailed explanation-4: -Due to the difference in pressure, the air flows from the high pressure over the sea to the low pressure over the land. This flow of air from the sea to the land is termed as the sea breeze.

Detailed explanation-5: -The air above the water is comparatively warmer and rises up, thus creating space for cool wind over land to move in towards the sea. This is called Land Breeze.

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