Atmosphere Model Question Paper

9th Standard

    Reg.No. :
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Social Science

Time : 01:00:00 Hrs
Total Marks : 40
    5 x 1 = 5
  1. The upper most layer of the atmosphere is ___________

    (a)

    Statrosphere

    (b)

    Mesosphere

    (c)

    Exosphere

    (d)

    Thermosphere

  2. This precipitation is a mixture of snow and rain

    (a)

    Sleet

    (b)

    Snow

    (c)

    Hail

    (d)

    Hailstones

  3. Humidity of the atmosphere is measured by the wet and dry bulb thermometer called _________

    (a)

    Anemometer

    (b)

    Thermometer

    (c)

    Hygrometer

    (d)

    Barometer

  4. The wind blowing from the east is________

    (a)

    Planetary winds

    (b)

    Easterly winds

    (c)

    Variable winds

    (d)

    Local winds

  5. This is the wettest place of India.

    (a)

    Mawsynram

    (b)

    Western Ghats

    (c)

    Shillong

    (d)

    Pune

  6. 6 x 2 = 12
  7. Who discovered Nitrogen in Atmosphere? When?

  8. What are Auroras?

  9. What are mountain barriers?

  10. What happens to atmospheric pressure with altitude?

  11. Define the terms (a) Absolute humidity (b) Relative humidity.

  12. Why is Troposphere called as weather making layer?

  13. 4 x 5 = 20
  14. Explain the different types of Permanent winds.

  15. Explain the different forms of precipitation.

  16. Describe the "composition of the atmosphere".

  17. How is the Orographic rainfall caused?

  18. 1 x 3 = 3
  19. Cuddalore and Nagapattinam are always affected by cyclones. Why?

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