Q.

The upward movement of warm air and the downward movement of cool air because the hot air rises after expanding due to heat and the cool air sinks, thus creating a cyclical movement is termed as what?  

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a

Conventional current 

b

Water current

c

Convection Currents

d

Wind current

answer is A.

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Detailed Solution

The air above the land gets heated and rises upwards, further gets cooled and comes down once again to take the place of the risen hot air. These are called Convection currents. 

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