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Q13
(UPPCS/2021)
Geography › World Physical Geography
Which one of the following reflects back more sunlight as compared to other three ?
Result
Your answer:
—
·
Correct:
C
Explanation
The ability of a surface to reflect sunlight is known as its albedo. It is defined as the ratio of reflected solar radiation to the total incoming radiation. Surfaces that appear light-colored or white generally have a higher albedo than dark-colored surfaces.
- Fresh snow has one of the highest albedo values on Earth, reflecting approximately 75% to 90% of incident sunlight.
- Sand deserts have an albedo ranging from 20% to 40%.
- Prairie land (grasslands) typically has an albedo of 15% to 25%.
- Paddy crop land, often being wet or covered with vegetation, has a relatively low albedo, usually between 10% and 25%.
Therefore, land covered with fresh snow reflects significantly more sunlight back into the atmosphere compared to the other three options.
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