DMPQ- Differentiate between tropical and extra tropical cyclone.

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Tropical Cyclone	Extra tropical cyclone
It has thermal origin and derives its energy from the latent heat of condensation	It has dynamic origin involving coriolis force and movement of air masses. The energy of a temperate cyclone depends on the densities of air masses.
It is confined to 10o – 300 N and S of equator.	It is confined to 350 – 650 N and S of equator. It is more pronounced in Northern hemisphere due to greater temperature contrast.
It is limited to small area. Its typical size is 100 – 500 kms in diameter. It varies with the strength of the cyclone.	It covers a larger area. Its typical size is 300 – 2000 kms in diameter.
Doesn’t last for more than a week	It lasts for two to three weeks
It moves from east to west	It moves from west to east

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