Hydrosphere Two, Three, and Five Marks Questions

9th Standard

    Reg.No. :
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Social Science

Time : 01:00:00 Hrs
Total Marks : 40
    4 x 2 = 8
  1. Mention the four spheres of the earth.

  2. Why is earth called a Blue planet?

  3. What is Hypsometric curve?

  4. Explain the terms a) Isobath b) Isohaline

  5. 4 x 5 = 20
  6. Write a paragraph on the origin of oceans.

  7. Write a note on continental shelf and continental slope

  8. 71% of the earth is covered by water, but very little can be used by humans. Why?

  9. What will happen if the seas and oceans contain only fresh water?

  10. 4 x 3 = 12
  11. What do you mean by the term Hydrosphere?

  12. Write a brief note on sea waves.

  13. What do you mean by the ocean salinity?

  14. What does this picture depict ? Write a note on the processes involved in it.

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