Atmosphere Two, Three, and Five Marks Questions

9th Standard

    Reg.No. :
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Social Science

Time : 01:00:00 Hrs
Total Marks : 35
    5 x 2 = 10
  1. Who discovered Nitrogen in Atmosphere? When?

  2. What are Auroras?

  3. What are mountain barriers?

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

  5. Why is Troposphere called as weather making layer?

  6. 5 x 5 = 25
  7. Write a paragraph about the structure of the atmosphere.

  8. Explain the different types of Permanent winds.

  9. How are clouds classified? Explain them.

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

  11. Explain the different forms of precipitation

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