Test: Atmospheric Circulation & Weather Systems - 1 - UPSC MCQ

Tropical cyclones are known as Cyclones in the Indian Ocean, Hurricanes in the Atlantic, Typhoons in the Western Pacific and South China Sea, and Willy-willies in the Western Australia.

An occluded front is formed during the process of cyclogenesis when a cold front overtakes a warm front. When this occurs, the warm air is separated (occluded) from the cyclone center at the Earth's surface.

Subtropical highs are the areas between 30°N and 30° S. These are high pressure areas.

It is generally balanced by a nearly equal but opposite gravitational force.

Isobars are lines connecting places having equal pressure.

Monsoons are seasonal winds which originate near the equatorial areas and from here they move towards the South–East Asia.

The standard atmosphere is a unit of pressure defined as 101325 Pascal (1.01325 bar), equivalent to 760 Millimeter of mercury (torr), 29.92 Inch of mercury and 14.696 Pounds per square inch.

A cyclone is a storm system characterized by a large low-pressure centre and numerous thunderstorms that produce strong winds and heavy rains. Cyclones feed on heat released when moist air rises, resulting in condensation of water vapour contained in the moist air.

The lines joining the places of equal atmospheric pressure are known as isobars.

A barometer is an instrument used to measure atmospheric pressure. It can measure the pressure exerted by the atmosphere by using water, air, or mercury.