| Date | May 2014 | Marks available | 1 | Reference code | 14M.1.SL.TZ2.29 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 29 | Adapted from | N/A |
Question
The greenhouse effect can be explained by the fact that the infrared radiation emitted by the surface of Earth
A. is absorbed by the atmosphere and then re-radiated in all directions.
B. raises the temperature of the upper atmosphere.
C. is trapped by the upper atmosphere.
D. is absorbed by the atmosphere and then all of it is re-radiated back to the surface of Earth.
Markscheme
A
Examiners report
[N/A]
Syllabus sections
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