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Which temperature term is important in dew formation?

Answer and explanation

Correct answer: Dew point

Answer: A, dew point. The dew point is the temperature to which air must cool, at a given amount of water vapour and pressure, for it to become saturated. If a grass blade or leaf cools to about the dew point, water vapour can condense on it as liquid dew. A seismic point concerns earthquakes, a lava point is not the atmospheric term needed here, and a tide point relates to sea-level movement; none explains dew formation. Therefore B, C, and D are wrong. Do not confuse dew point with the ordinary air temperature: the dew point specifically indicates how close the air is to saturation. Memory cue: dew point means “the cooling point for dew.”

Related tags

Dew PointDewCondensationSaturationForms Of Condensation: DewFrostFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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