Which of the following correctly explains why clothes dry faster on a windy day?
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A.
Wind removes the water vapour from the clothes’ surroundings.
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B.
Wind decreases the temperature of the water molecules.
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C.
Wind increases the humidity around the clothes.
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D.
Wind reduces the surface area of the clothes.
Correct Answer:
A. Wind removes the water vapour from the clothes’ surroundings.
Explanation:
Clothes dry more quickly on a windy day because moving air accelerates the process of evaporation. As water evaporates from wet fabric, the air immediately surrounding the clothes becomes saturated with moisture. Wind physically pushes this humid air away and replaces it with drier air from the environment. This constant circulation prevents the surrounding atmosphere from reaching its moisture-holding capacity, allowing water molecules to continue escaping the fabric at a faster rate. Therefore, increased wind speed effectively reduces the local humidity around the clothes, which is the primary factor in speeding up the drying process.
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