Which one of the following is NOT true in reference to Air mass ?
Air mass forms either in tropical or in polar region
Air mass develops on continents as well as over ocean
Air mass develops in a cyclonic condition
Air mass changes the weather conditions
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC NDA-1 – 2019
A) Air mass forms either in tropical or in polar region: True. Source regions are typically large, homogeneous areas like tropical oceans, polar continents, etc.
B) Air mass develops on continents as well as over ocean: True. Source regions can be continental (cA, cT) or maritime (mA, mT).
C) Air mass develops in a cyclonic condition: False. Cyclonic conditions involve convergence and uplift, leading to mixing and non-uniformity. Air masses form in areas of stable, stagnant, or slow-moving air, usually under high pressure (anticyclonic) conditions where the air resides long enough to take on the characteristics of the underlying surface.
D) Air mass changes the weather conditions: True. When an air mass moves from its source region to another area, it brings its characteristic temperature and moisture properties, influencing the weather of the new region.