Atmospheric absorption (greenhouse gases): The Sun’s infrared radiation is strongly absorbed by which gases in the Earth’s atmosphere? Identify the key IR-absorbing constituents among the choices. Choose the correct option.
General Knowledge
World Geography
Difficulty: Easy
Choose an option
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ACarbon dioxide
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BWater vapours
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CCarbon dioxide and water vapours
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DOzone
Answer
Correct Answer: Carbon dioxide and water vapours
Explanation
ConceptEarth’s atmosphere absorbs IR mainly due to water vapour and carbon dioxide (major greenhouse gases). Ozone is most important for absorbing UV, not IR.