Question

On a clear day, the sky appears to be more blue towards the zenith (overhead) than it does toward the horizon. This occurs because:

• 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.
• D. none of the above is true.

Answer 1

The correct option is C

the sunlight travels over a longer path at the horizon, resulting in more absorption.

On a clear day, the sky appears to be more blue towards the zenith (overhead) than it does
toward the horizon because the sunlight travels over a longer path at the horizon, resulting in more absorption.