Multiple Choice a. an argument c. a description b. an explanation d. none of the
ID: 3487488 • Letter: M
Question
Multiple Choice
a.
an argument
c.
a description
b.
an explanation
d.
none of these
Why does the sky look blue? Well, as light moves through the atmosphere, most of the longer wavelengths pass straight through. The air affects little of the red, orange and yellow light. However, the gas molecules absorb much of the shorter wavelength light. The absorbed blue light is then radiated in different directions, and gets scattered all around the sky. Whichever direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky therefore looks blue
a.
an argument
c.
a description
b.
an explanation
d.
none of these
Why does the sky look blue? Well, as light moves through the atmosphere, most of the longer wavelengths pass straight through. The air affects little of the red, orange and yellow light. However, the gas molecules absorb much of the shorter wavelength light. The absorbed blue light is then radiated in different directions, and gets scattered all around the sky. Whichever direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky therefore looks blue
Explanation / Answer
The answer is Option B. The phenomenon’s occurrence and the reason behind it is being explained at length.
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