Question

Which one of the following winds is not a planetary wind?
A) Trade
B) Westerly
C) Polar Easterly
D) Monsoon

Answer 1

Hint: Planetary winds are the winds that flow year-round from one latitude to another due to changes in air pressure at different latitudes. They're also referred to as prevailing winds. Over a certain area of the globe, planetary winds blow in a single direction.

Complete answer:
Let us analyze the given options:
Option A : This is not the correct option because Planetary winds are the broad dispersion of winds across the lower atmosphere. The northern hemisphere's trade winds blow in a belt between 5°N and 30°N, whereas the southern hemisphere's trade winds blow in a belt between 5°S and 30°S. As we all know, air travels from a high pressure to a low pressure environment.

Option B : This is not the correct option because westerlies blow from the subtropical high pressure band and the subpolar low pressure belt, respectively. The wind appears to be blowing from west to east in both hemispheres, since it bends right and left in the northern and southern hemispheres, respectively.

Option C : This is not the correct option because polar easterlies blowing from the polar high pressure belt migrate towards the subpolar low pressure belt, appearing to move from east to west according to the right-left rule.


Option D : This the correct option because the term "monsoon" was originally used to describe seasonal changes in annual latitudinal oscillations of the Intertropical Convergence Zone between its limits to the north and south of the equator, but it is now used to describe seasonal changes annual latitudinal oscillations of the Intertropical Convergence Zone between its limits to the north and south of the equator.Convergence Zone between its limits to the north and south of the Equator cause changes in atmospheric circulation and precipitation equator.

This region, which runs from the South China Sea to the Indian Ocean and includes Asia and the northern end of Australia, has the world's strongest monsoons. Summer monsoon rains fall in South Asian nations such as Vietnam, Thailand, Cambodia, Bangladesh, Laos, India, and Pakistan from June to September.

Thus the correct answer is option ‘D’.

Note: The wind that blows during the monsoon season is not the same as the wind that blows throughout the summer. This monsoon has numerous advantages, as it turns out. During ancient times, one of these monsoons was employed to speed up shipping.