The blueness of the sky is mainly due to _____________?
Correct answer: A. The scattering of sunlight by air molecules
- A. The scattering of sunlight by air molecules
- B. The presence of water vapor
- C. Absorption of blue light by the air
- D. Emission of blue light by the atmosphere
Explanation
Air molecules scatter short-wavelength blue light more strongly than longer-wavelength red light, so scattered blue light reaches the observer from all directions. Water vapour is not the main cause of the sky's blue colour.
Last updated
Related questions
The ozone layer is found in which layer of the atmosphere?
Pedology is study of ___________?
There are many different types of frozen water on Earth. Collectively, they are known as the: ___________?
The sky appears blue because the earth's atmosphere __________?
Which one of the following is the main culprit in the thinning of Ozone layer in the earth's stratosphere?