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Question
The greenhouse effect is a naturally occurring phenomenon that is responsible for heating of earth’s surface and atmosphere. Without the greenhouse effect, the average temperature at the surface of the earth would have been
The greenhouse effect is a naturally occurring phenomenon that is responsible for heating of earth’s surface and atmosphere. Without the greenhouse effect, the average temperature at the surface of the earth would have been
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Solution
The correct option is D −18∘C
Greenhouse effect
The greenhouse effect is the phenomenon of heating the Earth’s surface. This is due to the absorption of the longwave infrared radiations by the greenhouse gases such as CO2,CH4 and re-emit these radiations towards the surface of the Earth.
Average temperature of Earth without greenhouse gas
Presently, the average temperature of the Earth’s surface is 15∘C.
Without the greenhouse effect, the average temperature of the Earth’s surface would decrease and become chilly, that is, −18∘C.
This is due to lack of absorption of longwave infrared radiations by the greenhouse gases.
Final answer
(c) (-18^°C\).
Greenhouse effect
The greenhouse effect is the phenomenon of heating the Earth’s surface. This is due to the absorption of the longwave infrared radiations by the greenhouse gases such as CO2,CH4 and re-emit these radiations towards the surface of the Earth.
Average temperature of Earth without greenhouse gas
Presently, the average temperature of the Earth’s surface is 15∘C.
Without the greenhouse effect, the average temperature of the Earth’s surface would decrease and become chilly, that is, −18∘C.
This is due to lack of absorption of longwave infrared radiations by the greenhouse gases.
Final answer
(c) (-18^°C\).
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