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Why can frost form more easily in an open field?

Answer and explanation

Correct answer: The open surface can undergo greater radiational cooling at night (खुली सतह रात में अधिक विकिरणीय शीतलन कर सकती है)

Correct answer: A. At night, a ground surface loses energy by emitting terrestrial radiation. A clear, open field has a broad view of the sky and can lose heat efficiently, so its surface temperature may fall rapidly. If moist air is present and the surface reaches the freezing point or below, deposited moisture freezes as frost. B is wrong because an open field is land, not necessarily sea. C is wrong because water vapour can be present above fields. D is wrong because the night-time process is heat loss from the surface, not blocking sunlight. Trees or buildings may reduce direct radiational loss in some settings. Memory cue: clear sky plus strong night cooling plus moisture favours frost.

Related tags

FrostOpen FieldRadiational CoolingNight CoolingForms Of Condensation: DewFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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