SSC MTS EXAM

SSC

PHYSICAL GEOGRAPHY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What effect causes rain shadow?
A
Orographic Effect
B
Water Cycle
C
Tradewinds
D
Ocean Currents
Explanation: 

Detailed explanation-1: -The orographic effect occurs when air masses are forced to flow over high topography. As air rises over mountains, it cools and water vapor condenses. As a result, it is common for rain to be concentrated on the windward side of mountains, and for rainfall to increase with elevation in the direction of storm tracks.

Detailed explanation-2: -As the air rises and cools, orographic clouds form and serve as the source of the precipitation, most of which falls upwind of the mountain ridge. On the leeward side, rainfall is usually low, and the area is said to be in a rain shadow.

Detailed explanation-3: -Orographic Precipitation Precipitation which is caused by hills or mountain ranges deflecting the moisture-laden air masses upward, causing them to cool and precipitate their moisture.

Detailed explanation-4: -Rain shadow area is associated with orographic rainfall. When the saturated air is obstructed by land form barrier such as mountain, it forced to ascend and as it rises, it expands and temperature falls. As a result, condensation takes place and rainfall occurs.

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