water oceans ncert - Geography Ebooks | TheGeoecologist

Question 1

What is the average salinity of ocean water according to NCERT Class 11 Oceanography?

Accepted Answer

The average salinity of ocean water is 35 parts per thousand (ppt) or 3.5%, as stated in NCERT Class 11 Geography Chapter 13.

Question 2

How do ocean currents influence climate in NCERT Class 11 Oceanography?

Accepted Answer

Warm currents raise coastal temperatures and increase rainfall (e.g., Gulf Stream warming Western Europe), while cold currents lower temperatures and create arid conditions (e.g., Peru Current causing Atacama Desert).

Question 3

What are the major submarine relief features covered in NCERT Class 11 Oceanography?

Accepted Answer

Major features include continental shelf, continental slope, continental rise, abyssal plains, mid-ocean ridges, seamounts, guyots, and ocean trenches (e.g., Mariana Trench at 11,034 m).

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NCERT Class 11 Oceanography: Complete Guide to Water (Oceans) Chapter 13