On a planet where atmospheric gases are red, distant dark colored hills would look
A) bluish.
B) untinted.
C) greenish.
D) yellowish.
E) reddish.

Question

Quizplus · Accepted Answer

The color of distant objects is influenced by the atmospheric gases through which they are viewed. On a planet with red atmospheric gases, distant dark-colored hills would appear reddish due to the scattering of red light by the atmosphere. This effect is similar to why the Sun appears red when it is low on the horizon on Earth, due to the atmosphere scattering shorter (bluer) wavelengths of light and allowing longer (redder) wavelengths to pass through.

On a Planet Where Atmospheric Gases Are Red, Distant Dark