Atmosphere Book Back Questions

9th Standard

    Reg.No. :
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Social Science

Time : 00:45:00 Hrs
Total Marks : 30
    6 x 1 = 6
  1. ______ is the most important gas for the survival of living organisms.

    (a)

    Helium

    (b)

    carbon-di-oxide

    (c)

    oxygen

    (d)

    oxygen

  2. The lowest layer of the atmosphere is _______ 

    (a)

    Troposphere

    (b)

    Stratosphere

    (c)

    Exosphere

    (d)

    Mesosphere

  3. _______  reflects radio waves

    (a)

    Exosphere

    (b)

    Ionosphere

    (c)

    Mesosphere

    (d)

    Stratosphere

  4. The process of change of state of water from gaseous to liquid state is called ________ 

    (a)

    Precipitation

    (b)

    evaporation

    (c)

    transpiration

    (d)

    condensation.

  5. The ________  is the chief energy source of the Earth.

    (a)

    Sun

    (b)

    Moon

    (c)

    Stars

    (d)

    Clouds.

  6. The ______ pressure belt extends from 5°N and 5°S latitudes.

    (a)

    Equatorial low

    (b)

    Subtropical high

    (c)

    sub-polar low

    (d)

    polar high

  7. 3 x 2 = 6
  8. Weather and climate

  9. Land breeze and sea breeze

  10. Windward side and Leeward side.

  11. 4 x 2 = 8
  12. Define atmosphere

  13. Name the different atmospheric layers

  14. What are isotherms?

  15. How is the atmospheric Pressure measured?

  16. 2 x 5 = 10
  17. Write a paragraph about the structure of the atmosphere.

  18. How are cyclones formed? How are they classified?

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