What are the Westerlies?

examrobotsa's picture
Q: 57 (NDA-I/2008)
What are the Westerlies?

question_subject: 

Geography

question_exam: 

NDA-I

stats: 

0,50,14,50,7,5,2

keywords: 

{'seasonal winds': [0, 0, 1, 0], 'local winds': [0, 0, 0, 1], 'variable winds': [0, 0, 1, 1], 'parmanent winds': [0, 0, 1, 0], 'westerlies': [0, 0, 0, 1]}

The correct answer is option 1: Permanent winds. The Westerlies are the prevailing winds that blow from the west to the east in the middle latitudes of both hemispheres (between 30 and 60 degrees latitude). These winds are characterized by their continuous and consistent direction, hence the term "permanent."

Unlike seasonal winds (option 2) that change with the seasons or local winds (option 3) that occur in specific locations, the Westerlies are a global-scale wind pattern that plays a significant role in shaping weather and climate. They are caused by the rotation of the Earth and the uneven heating of the atmosphere. Due to their persistent nature, the Westerlies have a strong influence on ocean currents, flight paths, and the distribution of weather systems.

Option 4, variable winds, is incorrect as the Westerlies are not known for their variability. They are relatively steady and reliable compared to other wind patterns. Therefore, option 1 is the correct answer.