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Dew on low grass but not on a higher dry twig in the same field can be explained by what?

Answer and explanation

Correct answer: Difference in micro surface temperature and moisture

Correct answer: B. Dew formation depends on local cooling, surface properties and the moisture available immediately around a surface. Low grass may cool efficiently during a clear night and can remain close to moist ground, so its temperature may reach the dew point. A higher, dry twig may cool differently, have less nearby moisture and not reach the same condensation conditions. This small-scale variation is called a microclimatic difference. A is wrong because different materials, heights and exposures do not always have the same temperature. C is wrong because dew forms on many cool surfaces, not only rocks. D is wrong because water vapour can move through air and reach a twig. Memory cue: same field does not mean identical microclimate; compare cooling and local moisture.

Related tags

DewMicroclimateSurface CoolingLocal MoistureForms Of Condensation: DewFrostFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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