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Chemistry CBSE Live product
Class 9 (2026-27)
Earth as a system: Energy, Matter and life
Atmospheric Dynamics & Ocean Circulation
6.
Ocean currents
Question:
2
m.
Find
the
right
answer for the given questions:
1.
What happens to ocean water when its salinity increases?
It immediately changes into ice
It becomes denser and tends to sink
It stops moving completely
It becomes less dense and rises
2.
Why do many ports in northwestern Europe remain ice-free during winter, even at relatively high latitudes?
The North Atlantic Drift transports warm water towards the region
The region has no winter season
Cold polar currents heat the ports
The region receives continuous intense sunlight
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