7
QuizMultiple Choice

Paleoclimatology — Quiz

Question 7 • Earth and Space Science

How did the cloud-albedo feedback loop likely contribute to climate cooling after the Chicxulub impact?

Answer
A
It reflected more sunlight, enhancing cooling.
B
It increased sunlight absorption by ocean water.
C
It increased atmospheric carbon dioxide levels.
D
It reduced volcanic activity near the equator.

Explanation

Clouds reflect sunlight back into space, so an increase in cloud cover or reflectivity reduces the solar energy reaching Earth’s surface. After the Chicxulub impact, this cloud-albedo feedback would have amplified the initial cooling. The choice that describes this is “It reflected more sunlight, enhancing cooling.”

AI-written and checked against the verified answer.

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