It is midafternoon and you are canoeing down a river that empties into a large lake....

It is midafternoon and you are canoeing down a river that empties into a large lake. You are having a hard time making progress because of a stiff wind in your face. Is this situation likely to get better or worse at sunset? Explain.

Expert Solution

At sunset , this situation is likely to get better.

Explanation :

We know that the Specific Heat of water is much greater than that of rock and soil. So, at day time (midafternoon), the land warms up faster than the water. As a result, the air above this hotter land is also got heated up and become less dense than before ; causing the air to rise up because of the buoyant force. Therefore , a air gap is made in that place. To fill up this gap much densed (also much cooler) air comes from the large lake towards the land. This air is stopping you from making progress.

Now during the sunset , the land cools faster , reversing the convection cycle (i.e. now the air will flow from the land to the lake). That is why the situation would get better at the sunset.

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genius_generous answered 2 years ago

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Question

It is midafternoon and you are canoeing down a river that empties into a large lake....

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