NCERT 7th Class (CBSE) Social Science: Water – Quiz
37 Multiple Choice Questions related to Water – Quiz:
- Ocean water is warmer near the equatorial region and the temperature decreases towards the polar regions.
- The average salinity of ocean water is 35 per thousand.
- The movement of ocean water takes place through waves, tides and ocean current.
- Waves are formed in the oceans or seas when wind blows across the water surface.