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What is the reflection of sunlight from snow and glacier surfaces, which can slow melting and alter the water cycle, called?

Answer and explanation

Correct answer: Albedo effect

Correct answer: B, the albedo effect. Albedo is the fraction of incoming solar radiation reflected by a surface. Fresh snow and clean ice are bright, so they reflect a large share of sunlight and absorb less solar energy than dark soil, rock or open water. With less absorbed energy, melting may be reduced under otherwise similar conditions. A is wrong because refraction is the bending of light as it passes between materials. C is wrong because absorption means taking in radiation rather than reflecting it. D is wrong because evaporation is the change of liquid water into water vapour; it is not the name for reflection. Albedo is not a force and does not stop all melting, but it is an important surface property in energy balance. Memory cue: bright snow reflects; dark surfaces absorb.

Related tags

AlbedoSnow-MeltGlaciersHydrological CycleThe Living WorldBiologyClass 11 Mcq

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