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Droplets forming on a cold window from moist indoor air give an example of what?

Answer and explanation

Correct answer: Condensation

Correct answer: C, condensation. Indoor air may contain water vapour, especially when people breathe, cook, wash, or use warm water. When this moist air touches a cold window, the air immediately next to the glass cools. If it cools to its dew point, it cannot retain all its water vapour, so the vapour changes into liquid droplets on the glass. This gas-to-liquid change is condensation. A is wrong because erosion is the wearing away and movement of soil or rock by agents such as water or wind. B is wrong because transpiration is the release of water vapour from plant surfaces, mainly leaves. D is wrong because salinity means the amount or concentration of dissolved salts in water or soil. The window example is useful because it shows condensation in everyday life without needing clouds. Memory cue: warm moist air touching a cold surface produces droplets.

Related tags

CondensationCold WindowWater DropletsDew PointForms Of Condensation: DewFrostFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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