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General Knowledge :: Atmosphere

  1. The layer of the atmosphere which provides ideal conditions for flying on jet aeroplanes is ________

  2. A.

     Troposphere

    B.

     Stratosphere

    C.

     Ionosphere

    D.

     Exosphere

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  3. Because of which one of the following factors, clouds do not precipitate in deserts?

  4. A.

     Low pressure

    B.

     Low humidity

    C.

     High wind velocity

    D.

     High temperature

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  5. Which one among the following local winds is not characteristically hot and dry?

  6. A.

     Sirocco

    B.

     Mistral

    C.

     Khamsin

    D.

     Chinook

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  7. Which one of the following characteristics is not associated with the tropical cyclones?

  8. A.

     Before the cyclone arrives the air becomes very still and temperature and humidity are high

    B.

     As the front of the vertex arrives, gusty winds develop and thick clouds appear

    C.

     As the cold front passes, the weather changes very rapidly

    D.

     Calm conditions return when the eye of the cyclone arrives

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  9. In the atmosphere of the primitive earth there was no ________

  10. A.

     Oxygen

    B.

     Carbon dioxide

    C.

     Nitrogen

    D.

     Ammonia

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  11. Winds and air currents differ in the aspect that ________

  12. A.

     Air currents blow much faster than winds

    B.

     Air currents are always moisture laden while the winds are usually dry

    C.

     The winds blow on lands while air currents blow over seas and oceans

    D.

     Winds are horizontal movements of air while air currents are the vertical movements of air

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  13. Lapse rate is related to the decrease of ________

  14. A.

     Wind velocity with an ascent of 300 feet

    B.

     Humidity with an ascent of 450 feet

    C.

     Temperature at 1°F for an ascent of 330 feet

    D.

     Pressure with an ascent of 500 feet

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  15. The most abundant element in the Earth's atmosphere is

  16. A.

     Argon

    B.

     Nitrogen

    C.

     Oxygen

    D.

     Krypton

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  17. A temperature inversion is most likely to occur under which of the following conditions?

  18. A.

     Mountain top in late evening

    B.

     Windy but cloudy night

    C.

     Calm, cloudy and humid night

    D.

     Calm, clear and cool winter night

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  19. The final boundary between the Earth and the outer space is called

  20. A.

     Magnetosphere

    B.

     Ionosphere

    C.

     Mesopause

    D.

     Magnetopause

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