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In an area where there are no land surface (open ocean) the albedo of the surface will be :

  • A.Maximum
  • B.Minimum
  • C.More than bare soil
  • D.More than wet soil

Answer: B

The albedo of the open ocean is minimum.

Water absorbs most of the sunlight that enters it, so a deep ocean surface reflects only about 6 to 10 per cent of incoming radiation when the sun is high. That makes it one of the darkest surfaces on Earth and a reason why loss of sea ice amplifies warming in the Arctic.

Snow and fresh ice have the maximum albedo, 0.8 or more. Bare soil reflects roughly 0.15 to 0.25, and wet soil, being darker, a little less than dry soil but still more than open water. So the ocean's albedo is lower than both soils, which rules out the options saying it is more than either.

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