DP Physics (first assessment 2025)

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Question 21M.1A.SL.TZ2.30

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.1A.SL.TZ2.30
Level SL Paper 1A Time zone TZ2
Command term Question number 30 Adapted from N/A
30.
[Maximum mark: 1]
21M.1A.SL.TZ2.30

What is the main role of carbon dioxide in the greenhouse effect?

A. It absorbs incoming radiation from the Sun.

B. It absorbs outgoing radiation from the Earth.

C. It reflects incoming radiation from the Sun.

D. It reflects outgoing radiation from the Earth.

[1]

Markscheme

B

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