Why is the sky blue?
A) The air molecules absorb red light more effectively than blue light, allowing more blue light to reach observers on Earth's surface.
B) The air molecules scatter blue light more effectively than red light, so more blue light reaches observers on Earth's surface indirectly (from directions other than the direct beam of sunlight).
C) The air molecules scatter red light more effectively than blue light, so less red light reaches observers on Earth's surface indirectly (from directions other than the direct beam of sunlight).
D) The air molecules absorb blue light more effectively than red light, making the sky appear bluer.

Question

Quizplus · Accepted Answer

The sky appears blue because air molecules scatter shorter wavelengths of light (like blue) more than longer wavelengths (like red). This scattering causes blue light to reach the observer from various directions, making the sky look blue.

Why Is the Sky Blue