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Droplets formed from indoor moist air on a cold window are an example of what?

Answer and explanation

Correct answer: Condensation

Correct answer: A, condensation. Warm indoor air can contain water vapour. When this moist air touches a cold window, the air immediately next to the glass is cooled. Cooler air cannot hold as much water vapour as warmer air, so some vapour changes into liquid-water droplets on the glass. This change from gas to liquid is condensation. A is correct. B is wrong because erosion means the wearing away and movement of soil or rock, not droplet formation. C is wrong because salinity refers to the amount of dissolved salt in water and does not explain clear droplets on a window. D is wrong because an earthquake is ground shaking caused by movement within the Earth. The same basic process helps explain dew, although dew forms outdoors on naturally cooled surfaces. Memory cue: vapour plus a cold surface produces condensation droplets.

Related tags

CondensationCold WindowWater DropletsWater VapourForms Of Condensation: DewFrostFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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