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PHY 104 PHY 104 Past Questions Objective Question
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Question

On a clear day, the sky appears to be more blue toward the zenith (overhead) than it does toward the horizon. This occurs because
Options
A the atmosphere is denser higher up than it is at the earth's surface.
B the temperature of the upper atmosphere is higher than it is at the earth's surface.
C the sunlight travels over a longer path at the horizon, resulting in more absorption.
Correct Answer
D none of the options is true.
Correct Answer

Option C is the correct answer.

Detailed Explanation

At the horizon, sunlight travels through a longer path in the atmosphere, causing more scattering of blue light and making the sky appear less blue (more white).

Hint

The path length through the atmosphere is longer at the horizon.

Question Info

Course: PHY 104
Topic: PHY 104 Past Questions
Type: Objective
Difficulty: Not specified
Question 933 of 947
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