Hydrologic Cycle Book Back Questions

8th Standard EM

    Reg.No. :
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Social Science

Time : 00:45:00 Hrs
Total Marks : 30
    5 x 1 = 5
  1. The process in which the water moves between the oceans, atmosphere and land is called

    (a)

    River Cycle

    (b)

    Hydrologic Cycle

    (c)

    Rock Cycle

    (d)

    Life Cycle

  2. The percentage of fresh water on the earth is

    (a)

    71

    (b)

    97

    (c)

    2.8

    (d)

    0.6

  3. The process of changing of water from gaseous to liquid form is known as

    (a)

    Condensation

    (b)

    Evaporation

    (c)

    Sublimation

    (d)

    Rainfall

  4. The evaporation of water from the leaves of plants is called

    (a)

    Transpiration

    (b)

    Condensation

    (c)

    Water vapour

    (d)

    Precipitation

  5. Water that is good enough to drink is called

    (a)

    Groundwater

    (b)

    Surface water

    (c)

    Potable water

    (d)

    Artesian water

  6. 4 x 1 = 4
  7. The degree of water vapour present in the atmosphere is known as__________.

    ()

    Humidity

  8. The falling of water towards the earth surface from atmosphere in any form is known as _________.

    ()

    Precipitation

  9. The precipitation with the rain drop size of < 0.5mm in diameter is known as ___________.

    ()

    Drizzle

  10. Mist is denser than _______.

    ()

    Fog

  11. 3 x 1 = 3
  12. Water boils at 212oF temperature but, it begins to evaporate at 32oF.

    (a) True
    (b) False
  13. Mist is not the tiny droplets of water hanging in the air.

    (a) True
    (b) False
  14. The sub-surface runoff is usually referred as interflow.

    (a) True
    (b) False
  15. 2 x 1 = 2
  16. Infiltration of water is low in the region of non-porous soil.

  17. Snowfall is common in the polar region and mountainous regions.

  18. 2 x 3 = 6
  19. Write a short note on aquifer.

  20. How is the dew formation takes place?

  21. 2 x 5 = 10
  22. Distinguish between evaporation and transpiration.

  23. Explain the run-off and its types.

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