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General Knowledge :: Environmental Science

  1. Water vapour is:

  2. A.

     A gas

    B.

     A cloud droplet

    C.

     A rain drop

    D.

     A snowflake

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  3. What is the cause of the Exxon Valdez?

  4. A.

     Oil Tanker which sank in 1989 along the coast of Alaska and marine life seriously affected.

    B.

     a plane which crashed and caused death of human life

    C.

     a ship which wrecked on the coast of India

    D.

     none of these.

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  5. In calm air the air temperature is -10o C, if the wind speed should increase to 30 knots (with no change in air temperature) the thermometer would indicate:

  6. A.

     A much higher temperature than -10o C

    B.

     A much lower temperature than -10o C

    C.

     A temperature of -10o C

    D.

     A temperature of -30o C

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  7. Infrared and visible satellite images might provide:

  8. A.

     A way of determining cloud thickness and altitude.

    B.

     A way of distinguishing between wet and dry clouds.

    C.

     A way of identifying clouds suitable for cloud seeding.

    D.

     A way of distinguishing between "new" and "old" clouds.

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  9. At what time of day is the relative humidity normally at a minimum?

  10. A.

     When the air temperature is highest

    B.

     Just before sunrise

    C.

     About midnight

    D.

     When the air temperature is lowest

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  11. The atmospheric greenhouse effect is produced mainly by the:

  12. A.

     Absorption and re-emission of visible light by the atmosphere

    B.

     Absorption and re-emission of ultraviolet radiation by the atmosphere

    C.

     Absorption and re-emission of infrared radiation by the atmosphere

    D.

     Absorption and re-emission of visible light by clouds

    E.

     Absorption and re-emission of visible light by the ground

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  13. The blueness of the sky is mainly due to:

  14. A.

     The scattering of sunlight by air molecules

    B.

     The presence of water vapor

    C.

     Absorption of blue light by the air

    D.

     Emission of blue light by the atmosphere

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  15. The atmosphere near the earth's surface is "heated from below." Which of the following does not significantly contribute to this heating?

  16. A.

     Conduction of heat upward from a hot surface

    B.

     Convection from a hot surface

    C.

     Absorption of infrared energy that has been radiated from the surface

    D.

     Heat energy from the earth's interior

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  17. The gradual physiological adjustment to slowly changing new environmental conditions is known as

  18. A.

     Selection

    B.

     Introduction

    C.

     Acclimatization

    D.

     Quarantine

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  19. Salinization is ___________.

  20. A.

     Accumulation of salts in water

    B.

     Accumulation of salts in soil

    C.

     Accumulation of salts in body

    D.

     Accumulation of salts in animals

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