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How does the average temperature of Eart...

How does the average temperature of Earth remain fairly steady?

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**Step-by-Step Text Solution:** 1. **Understanding Earth's Atmosphere**: The Earth's atmosphere plays a crucial role in regulating temperature. It acts as a blanket that helps to maintain a stable temperature. 2. **Conduction of Heat**: The atmosphere is considered a poor conductor of heat. This means that it does not allow heat to escape or enter rapidly. 3. **Daytime Heat Retention**: During the day, the Earth absorbs sunlight, and the heat is retained in the atmosphere. The slow escape of heat during the day helps to maintain a stable temperature. ...
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Consider the Sun to be a black body at temperature T_(S) = 5780 K . Radius of the Sun is r_(S) = 6.96 xx 108 m . The Earth - Sun distance is R = 1.49 xx 1011m . Assume that 30% of the solar radiation that hits the earth is scattered back into space without absorption. (a) Calculate the steady state average temperature of the earth assuming it to be a black body. Take (0.7 )^((1)/(4))= 0.91 (b) We know that average temperature of earth is ~=288K . How does this value compare with that obtained in (a)? The difference is due to greenhouse effect. Comment on the following statement - “Emissivity of earth is reduced more than absorptivity due to green house effect.”

If there is no greenhouse effect , then the average temperature of the earth will be

Knowledge Check

  • The average temperature of the earth remains fairly steady as compared to that of the moon because of the

    A
    Atmosphere
    B
    Lithosphere
    C
    Biosphere
    D
    Hydrosphere

  • The …………. keeps the average temperature of the Earth fairly steady.

    A
    biosphere
    B
    heliosphere
    C
    atmosphere
    D
    photosphere

  • The present average temperature of earth is

    A
    `10^(@)C`
    B
    `12^(@)C`
    C
    `14^(@)C`
    D
    `15^(@)C`

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    Due to green house effect present average temperature of earth is:

    If three wave no atmosphere, the average temperature on the surface of earth would be :-

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