During clear sky conditions,the sky is normally blue in the middle of the day,and some combination of red,yellow and orange at sunrise and sunset. This suggests that

Question

Quizplus · Accepted Answer

The color of the sky during clear sky conditions is related to atmospheric path length. This is because blue light is scattered more than other colors by the molecules in the Earth's atmosphere, and this scattering is more pronounced when atmospheric path length is longer. This results in a blue sky during the middle of the day, and a combination of red, yellow, and orange during sunrise and sunset, when the sunlight has to pass through a longer path length of the atmosphere. The other options (A, C, D) do not explain the relationship between sky color and clear sky conditions.

During Clear Sky Conditions,the Sky Is Normally Blue in the Middle