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Chemistry CBSE Live product
Class 9 (2026-27)
Earth as a system: Energy, Matter and life
Atmospheric Dynamics & Ocean Circulation
1.
Local winds
Question:
2
m.
Choose
the
correct
answer:
1.
The upward movement of cooler air from the valley towards the mountain slopes during the day is called:
Mountain breeze
Sea breeze
Trade wind
Valley breeze
2.
Why does the air over the mountain slopes flow downward at night?
The valley pushes the air downward
The Sun pulls the air downward
The air becomes cooler and denser
The air becomes warmer and lighter
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