Question

Nearly 30% of the solar radiations return back to the space without contributing anything to the Earth's surface temperature. This amount of radiation is known as ________.

• A. solar insolation
• B. tropopause
• C. earth's albedo
• D. mesopause

Answer 1

Answer: (C)

earth's albedo

Albedo is a measure of reflection of solar radiation out of the total solar radiation incident on a body. It is measured on a scale of 0 to 1. Earth's albedo is about 0.30, which means it reflects almost 30% of the solar radiation incident on it.