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Why do clouds appear white?

Answer and explanation

Correct answer: Droplets and ice crystals scatter sunlight in many directions

The correct answer is A. Clouds contain many tiny water droplets and, in colder conditions, ice crystals. These particles interact with incoming sunlight and scatter its different visible wavelengths in many directions. Because the scattered light reaches our eyes from across the cloud, the cloud commonly appears white or bright. A thick cloud may look grey or dark when less light passes through it, but the basic explanation remains light scattering. B is wrong because clouds are not made of a special white gas. C is wrong because clouds strongly interact with sunlight. D is wrong because droplets and ice crystals are essential cloud particles. Cue: cloud colour is mainly a light-scattering effect.

Related tags

Cloud ColourLight ScatteringWater DropletsClouds And PrecipitationWater In The AtmosphereGeographyClass 12 Mcq

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