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General Knowledge :: Hydrosphere

  1. The ocean surface currents follow clockwise circulatory paths in the northern parts of the Pacific and Atlantic oceans due to the ________

  2. A.

     Convergence and divergence movements

    B.

     Coriolis force

    C.

     Density differences in seawater

    D.

     Impact of prevailing winds


  3. Why are the ports of Baltic sea opened for trade in winter?

  4. A.

     It is tropical belt

    B.

     North Atlantic warm currents flow in this region

    C.

     Local factors keep it warm

    D.

     Western disturbances increase the temperature


  5. The reason behind broadening the river valley is

  6. A.

     Corrosion

    B.

     Soil Erosion

    C.

     Attrition

    D.

     Hydraulic Action


  7. Which one of the following factors is responsible for the change in the regular direction of the ocean currents in the Indian Ocean?

  8. A.

     Indian Ocean is 'half an ocean'

    B.

     Indian Ocean has Monsoon drift

    C.

     Indian Ocean is a land-locked ocean

    D.

     Indian Ocean has greater variation in salinity


  9. Imaginary lines connecting places in oceans having equal salinity are called

  10. A.

     Isotherms

    B.

     Isobars

    C.

     Isohalines

    D.

     Isohyets


  11. The ideal conditions for coral growth are:
    I. water temperature around 20°C
    II. tropical waters (between 30°N and 30°S)
    III. highly saline water
    IV. adequate oxygen

  12. A.

     I, II and IV

    B.

     I, III and IV

    C.

     I, II and III

    D.

     II, III and IV


  13. Which of the following current is responsible for rise in temperature in westen Europe?

  14. A.

     Labrador Current

    B.

     Gulf stream

    C.

     Canary Current

    D.

     North Eqatorial


  15. What is the correct decreasing order of the share of different salts in sea water?

  16. A.

     Sodium chloride, magnesium chloride, magnesium sulphate, potassium sulphate

    B.

     Sodium chloride, magnesium chloride, potassium sulphate, magnesium sulphate

    C.

     Sodium chloride, magnesium sulphate, potassium sulphate, magnesium chloride

    D.

     Sodium chloride, magnesium chloride, potassium sulphate, magnesium sulphate


  17. Which one of the following European countries borders Atlantic Ocean?

  18. A.

     Portugal

    B.

     Austria

    C.

     Finland

    D.

     Romania


  19. The Lena river passes through which country?

  20. A.

     China

    B.

     USA

    C.

     Russia

    D.

     Brazil