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1. During summer, if you go near the lake, you feel relief from the heat, why?
Going to or sitting near a water body provides relief from the heat during the summer. This is due to the fact that the . During the summer, solar radiation heats up the water body. Water vapour rises upwards and condenses as the temperature of the water rises. The air laden with water vapour is than the dry air blowing on land. This air flowing from the water body provides relief from the heat or high temperature during summer.
2. In coastal area, wind current moves from the sea towards the land during day; but during night it moves from land to the sea. Discuss the reason.
A cool breeze flows regularly from the sea towards the land during the daytime in coastal areas. However, there is a reverse flow of air from land to sea at night. It is so because the air above land gets heated faster and starts rising during the day, creating a region of below. The air above sea is comparatively cool. As a result, the air over the sea moves into this region. Thus, during the day, the direction of the wind is from the sea to the land. At night, both the land and the sea start to . Since water cools down slower than the land, the air above the water is warmer than the air above land. Thus, during the night, the direction of the wind is from land to the sea.
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