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Pollution, Climate and Conventions · Question 49 of 67

Question 49

HardOriginal question

As Arctic sea ice melts, the warming there speeds up. Why?

Options for question 49

Show the answer and explanation
CorrectNot quiteAnswer C

Correct answer: C

Explanation

  1. White ice reflects most sunlight back to space; it has a high albedo.

  2. Open ocean is dark and absorbs it, warming further and melting more ice: a positive feedback.

Worth noting

Melting actually absorbs heat; it does not release it.

Concept
The ice–albedo feedback
Typical time
90 s
Your time
—
The rule this testsClimate change
Practise this chapter →

Ten questions from Pollution, Climate and Conventions, at your own pace.

Practise this chapter →

Ten questions from Pollution, Climate and Conventions, at your own pace.