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Multiple Choice
Which of the following gases is not considered a greenhouse gas?
A
Carbon dioxide (CO2)
B
Methane (CH4)
C
Water vapor (H2O)
D
Nitrogen (N2)
Verified step by step guidance
1
Understand the definition of a greenhouse gas: Greenhouse gases are those that can absorb and emit infrared radiation, contributing to the greenhouse effect, which warms the Earth's atmosphere.
Identify the common greenhouse gases: Carbon dioxide (CO2), methane (CH4), and water vapor (H2O) are well-known greenhouse gases because they have the ability to trap heat in the atmosphere.
Consider the properties of nitrogen (N2): Nitrogen makes up a large portion of the Earth's atmosphere but does not have the ability to absorb and emit infrared radiation effectively, thus it is not considered a greenhouse gas.
Compare the gases listed: Carbon dioxide (CO2), methane (CH4), and water vapor (H2O) are all greenhouse gases, while nitrogen (N2) is not.
Conclude that nitrogen (N2) is the gas that is not considered a greenhouse gas among the options provided.