DP Physics (first assessment 2025)

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Question 21N.1A.SL.TZ0.25

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Date November 2021 Marks available [Maximum mark: 1] Reference code 21N.1A.SL.TZ0.25
Level SL Paper 1A Time zone TZ0
Command term Question number 25 Adapted from N/A
25.
[Maximum mark: 1]
21N.1A.SL.TZ0.25

The diagram shows a simple model of the energy balance in the Earth surface-atmosphere system. The intensities of the radiations are given.

What is the average intensity radiated by the atmosphere towards the surface?


A.  100 W m−2

B.  150 W m−2

C.  240 W m−2

D.  390 W m−2

[1]

Markscheme

B

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