Water Model Question Paper

6th Standard

    Reg.No. :
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Science

Time : 02:00:00 Hrs
Total Marks : 60
    5 x 1 = 5
  1. Around 97% of water available on earth_________ is water

    (a)

    fresh

    (b)

    pure

    (c)

    salty

    (d)

    polluted

  2. Which of the following is not a part of water cycle?

    (a)

    evaporation

    (b)

    condensation

    (c)

    rain

    (d)

    distillation

  3. About 30% of the fresh water is found in?

    (a)

    glaciers

    (b)

    ground water

    (c)

    other sources of water

    (d)

    0.3%

  4. ___________________ helps to regulate the temperature of our planet.

    (a)

    Water

    (b)

    Salinity

    (c)

    Pollutants

    (d)

    Industry

  5. ______________ depends on water at all levels of production.

    (a)

    Water

    (b)

    Salinity

    (c)

    Pollutants 

    (d)

    Industry

  6. 5 x 1 = 5
  7. Only _______ percent of natural water is available for human consumption.

    ()

    3

  8. _________is built on rivers to regulate water flow and distribute water

    ()

    Dams

  9. Water cycle is also called as_______.

    ()

    hydrological cycle.

  10. The molecular formula of water is _____________.

    ()

    H2O

  11. Rain water forms the _______________ state.

    ()

    Liquid

  12. 4 x 1 = 4
  13. The water vapour in the atmosphere forms clouds.

    (a) True
    (b) False
  14. Water vapour is measured in litre and millilitre.

    (a) True
    (b) False
  15. Gallon is also a measure of volume of liquids.

    (a) True
    (b) False
  16. Estuaries are home to unique plants and animal species.

    (a) True
    (b) False
  17. 5 x 1 = 5
  18. Surface water

  19. (1)

    3.785 litre

  20. Sun light

  21. (2)

    Pole

  22. Frozen water

  23. (3)

    Evaporation

  24. Seawater

  25. (4)

    more than 3% of salt

  26. 1 Gallon

  27. (5)

    Lake

    7 x 2 = 14
  28. Name four different sources of water

  29. Take out of cooled bottle of water from refrigerator and keep it on a table. After some time you notice a puddle of water around it. Why?

  30. Name the places where water is found as ice.

  31. How do aquatic animals manage to live in Arctic and Antarctic Circle?

  32. What are the types of rain water harvesting?

  33. What is meant by evaporation?

  34. What is meant by precipitation?

  35. 4 x 3 = 12
  36. Differentiate between surface water and ground water.

  37. Write a few slogans of your own on the topic “Save Water”.

  38. Give reason for the following statement – Sewage should not be disposed of in rivers or oceans before treatment.

  39. To clean the spectacles, people often breathe out on glasses to make them wet. Explain why do the glasses become wet.

  40. 3 x 5 = 15
  41. What is potable water? List down its characteristics

  42. What is rainwater harvesting? Explain in a few sentences how it can be used in houses.

  43. What are the reasons for scarcity of water?

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