Multiple choice general knowledge science & technology

Which of these do not affect the amount of radiation hitting the surface of the Earth?

  1. Cloudiness

  2. Altitude

  3. Humidity

  4. They all do.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Clouds reflect incoming solar radiation back to space, higher altitude means less atmospheric scattering and absorption before radiation reaches the surface, and water vapor from humidity absorbs certain wavelengths. All three factors significantly modify solar radiation reaching Earth's surface.

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