Hydrosphere English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021

9th Standard

    Reg.No. :
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Social Science

Time : 00:10:00 Hrs
Total Marks : 10

    Part A

    10 x 1 = 10
  1. The Sunda Trench lies in the____________ ocean.

    (a)

    Atlantic

    (b)

    Pacific

    (c)

    Indian

    (d)

    Antarctic

  2. Ocean currents are produced due to________

    (a)

    due to rotation of earth

    (b)

    due to variation in temperature

    (c)

    due to earth's movement

    (d)

    all the above

  3. Consider the following statements.
    1. Most of the fishing grounds occur in areas where the continental shelf is wide.
    2. Fishing is well developed in warm tropical waters.
    3. Mixing of warm and cold currents facilitates plant nutrients for fish.
    4. Inland fishing became significant in India.

    (a)

    1 and 2 are correct

    (b)

    1 and 3 are correct

    (c)

    2,3 and 4 are correct

    (d)

    1,2 and 3 are correct

  4. Which of the following indicates the correct sequence of the topography beneath the surface of the sea?

    (a)

    Continental shelf-Continental slope-Sea plain-Sea trench

    (b)

    Continental slope-Continental shelf-Sea plain-Sea trench.

    (c)

    Sea plain-Continental slope-Continental shelf-Sea trench.

    (d)

    Continental slope-Sea plain-Continental shelf-Sea trench.

  5. The amount of planktons to be found in the ocean is determined by
    1. Depth of the water.
    2. Ocean currents.
    3. Temperature and Salinity.
    4. Length of day and night.

    (a)

    1 and 2 are correct

    (b)

    1,2 and 3 are correct

    (c)

    1,3 and 4 are correct

    (d)

    All are correct

  6. Hawaii islands are located on the_____________ocean.

    (a)

    Pacific

    (b)

    Indian

    (c)

    Atlantic

    (d)

    Arctic

  7. Marine resources  consists of_______resources.

    (a)

    Biological

    (b)

    Mineral

    (c)

    Energy

    (d)

    All of the above

  8. Consider the following statements.
    1. There are four major processes involved in the water cycle.
    2. The ground water gets collected below the earth's surface
    3. The Northern hemisphere holds 81% of land
    4. The ocean floor is flat

    (a)

    1 and 2 are correct

    (b)

    2 and 3 are correct

    (c)

    2 is correct

    (d)

    2, 3 and 4 are correct

  9. Consider the following statements.
    1. Sylvia Earle is a famous American oceano-grapher
    2. The continental shelves have extensive deposits of mineral fuels.
    3. Submarine fans are located in continental slope.
    4. Abyssal plains are otherwise called shallow sea plains

    (a)

    1 and 2 are correct

    (b)

    2 and 4 are correct

    (c)

    3 and 4 are correct

    (d)

    1, 2, and 3 are correct

  10. Consider the following statements.
    1. Dragon Hole is the deepest known underwater sink hole in the world.
    2. Epicentre of the great earthquakes are found in Abyssal plains.
    3. Fathom means an imaginary line joining the points of equal salinity.
    4. Salinity is maximum at the poles.

    (a)

    1 is correct

    (b)

    1 and 2 are correct

    (c)

    4 is correct

    (d)

    2 and 3 correct

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