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Why can frost formation be more likely in an open field?

Answer and explanation

Correct answer: An open field can have stronger radiational cooling at night

Direct answer: A is correct. On a clear night, the ground and exposed plant surfaces lose heat by emitting long-wave radiation. An open field has a wide, unobstructed exposure to the sky, so surfaces may cool strongly. If moist air is present and the surface temperature reaches the freezing point or below, moisture can form ice crystals, producing frost. A correctly links open exposure, radiational cooling, and freezing. B is wrong because open fields still contain air and may have wind. C is wrong because a field does not block sunlight; the issue occurs mainly at night. D is wrong because water vapour can be present in any moist environment. Memory cue: open sky plus clear, cold night favours frost.

Related tags

FrostOpen FieldRadiational CoolingForms Of Condensation: DewFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeographyClass 12 Mcq

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