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Why does dew disappear quickly after sunrise?

Answer and explanation

Correct answer: Because solar heat evaporates the droplets

Answer: B, solar heat evaporates the droplets. Dew is liquid water that forms when a surface becomes cool enough for nearby moist air to reach saturation and deposit water on the surface. After sunrise, sunlight supplies energy to the ground, grass, leaves, and the dew itself. As the surface temperature rises, the droplets gain energy and change from liquid water into water vapour; this process is evaporation. Drying also becomes faster when the surrounding air can accept more vapour. Option A is wrong because freezing would produce frost and requires temperature at or below the freezing point; ordinary warming after sunrise does not freeze dew. Option C is wrong because gravity continues to act and has no role in making dew vanish. Option D is wrong because dew does not chemically become soil; it physically evaporates. Memory cue: morning sun warms the surface, and warming promotes evaporation.

Related tags

GeographyDewEvaporationSunriseForms Of Condensation: DewFrostFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereClass 12 Mcq

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