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The sudden transformation of water vapor into cold ice crystals at very high altitudes in the atmosphere is called what?

Answer and explanation

Correct answer: Deposition

Correct answer: B, deposition. Deposition is the phase change in which a gas changes directly into a solid without first becoming a liquid. In the atmosphere, water vapor can form ice crystals when the air is sufficiently cold and suitable surfaces or particles are available. These crystals may contribute to high clouds such as cirrus clouds. A, liquid condensation, means vapor changes into liquid water droplets; it is different from direct ice formation. C is the reverse of freezing: solid ice becomes liquid. D is the movement of water over land toward streams and rivers, so it is not an atmospheric phase change. Do not confuse deposition with sublimation: sublimation is solid changing directly into gas, whereas deposition is gas changing directly into solid.

Related tags

DepositionIce-CrystalsAtmospheric-WaterHydrological CycleThe Living WorldBiologyClass 11 Mcq

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