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) only the longest waves of visible light are striking your eye.
C) the next day's weather will be stormy.
D) you will not be able to see the moon that night.

Question

Quizplus · Accepted Answer

When the sun appears red during sunset, it means that the shorter wavelengths (such as blue and green) have already scattered away and only the longer wavelengths (such as red and orange) are able to reach our eyes. This is because the light from the sun has to travel through more of the Earth's atmosphere during sunset, causing the shorter wavelengths to scatter away more.

If the Setting Sun Appears Red,you May Conclude That