Which of the following electromagnetic wave play an important role in maintaining the earth's warmth or average temperature through the greenhouse effect?

Options

A. Visible rays
B. Infrared waves
C. Gamma rays
D. Ultraviolet rays

Answer

B

Explanation

Infrared radiation plays an important role in maintaining the earth's warmth through greenhouse effect. Incoming visible light when passes relatively easily through the atmosphere is absorbed by the earth's surface and radiated as infrared (longer wavelength) radiation. This radiation is trapped by greenhouse gases such as carbon dioxide and water vapour. In this way an average temperature is maintained.