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Why can evaporation be higher over an open water body during the day?

Answer and explanation

Correct answer: Both solar heating and an open water surface are available

Correct answer: A. Evaporation needs energy because some liquid water molecules must gain enough energy to escape into the air. During the day, solar radiation warms the water and increases the energy available at its surface. An open water body also exposes a broad surface, allowing more molecules to evaporate than a covered or very small surface. Air movement may further remove moist air, although it is not stated as the main reason here. B is wrong because conversion of vapour into a solid is deposition, not evaporation. C is wrong because moisture does not disappear; liquid water changes into vapour and mixes with air. D is wrong because evaporation and condensation can both occur in the same water environment. Memory cue: daytime evaporation is favoured by heat plus exposed surface.

Related tags

GeographyOpen WaterEvaporationSolar HeatingHumidityAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereClass 12 Mcq

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