Question

By what name is cyclone known in North America?
(A) Typhoon
(B) Tornoid
(C) Hurricane
(D) Flood

Answer 1

Hint: A cyclone can be defined as a low atmospheric pressure area around which a large scale air mass rotates. The cyclone has different names in different parts of the world.

Complete Answer:
Cyclones are the natural calamity. They are characterized by the inward spiraling of winds which rotate about a zone of low pressure. Polar vortices are regions of temperature areas due to extremely low temperatures. Thus, Polar Regions are always under the risk of the cyclone.
In different countries cyclones have different names.
In the Philippines and Japan, it is called the ‘typhoon’.

$\therefore$ In North America, cyclones are known as Hurricanes. So, option (C) is correct.

Additional information:
The center of cyclone also known as the eye of the cyclone is the area of the lowest atmospheric pressure in the region.
Coriolis forces play an important role in the formation of cyclones. Coriolis force is the deflecting force that is generated due to the rotation of the earth on its axis. The Coriolis force is maximum at poles and gradually decreases on moving toward the equator. At the equator, it is equal to zero. Due to the Coriolis Effect, the wind flowing around a large cyclone is counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.

Note:
Cyclones do not occur at the equator due to the absence of Coriolis force there.
Similar to a cyclone (where air mass moves around low pressure) an anticyclone is a place where air moves around a high atmospheric pressure area.
The only difference between a hurricane, typhoon, and tropical cyclone is the place of their origin.
Following are the various names of cyclone in various parts of the world:
(i) Willy-willy in Australia
(ii) Hurricanes in North Atlantic
(iii) Central North Pacific
(iv) Eastern North Pacific
(v) Typhoon in North West pacific
(vi) A tropical cyclone in the South Pacific and the Indian Ocean.
(vii) Tornoid in Central America.