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What is the main energy source for evaporation?

Answer and explanation

Correct answer: Solar heat

Direct answer: B is correct. Evaporation changes liquid water into water vapour at the surface. Water molecules need energy to escape from the liquid and enter the air. The Sun supplies most of this energy through solar radiation and heating of land and water. A is wrong because Moon soil is not the main energy source for evaporation on Earth. B is correct because solar heat drives evaporation from oceans, lakes, rivers, and wet soil. C is wrong because earthquakes are occasional events and do not supply the regular energy needed for the global water cycle. D is wrong because coal ash is a leftover solid material, not an energy source for ordinary evaporation. Wind and low humidity can increase the rate, but they do not replace the Sun as the main energy source. Memory cue: Sun heats water; evaporation lifts it into the air.

Related tags

GeographySolar-HeatEvaporationWater-CycleHumidityAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereClass 12 Mcq

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