If the setting Sun appears red, you may conclude that ____.
A)the Sun's surface temperature has cooled somewhat at the end of the day
B)the longest wavelengths of visible light are striking your eyes
C)the next day's weather will be stormy
D)you will not be able to see the Moon that night
E)the shortest wavelengths of visible light are striking your eyes

Question

Quizplus · Accepted Answer

The red appearance of the setting Sun is due to the scattering of shorter wavelengths of light (blue and violet) by the atmosphere, leaving the longer wavelengths (red) to reach the observer's eyes. This phenomenon is explained by Rayleigh scattering.

If the Setting Sun Appears Red, You May Conclude That