Which factor is most decisive in the formation of jet streams in the upper troposphere?
Answer and explanation
Correct answer: Strong horizontal temperature and pressure gradients
Jet streams are narrow bands of very strong, predominantly west-to-east winds near the upper troposphere and tropopause. Unequal heating across latitudes creates strong horizontal temperature contrasts, which are associated with pressure gradients aloft; Earth’s rotation then organizes the flow into fast, nearly geostrophic winds. Thus option D is correct. Exospheric escape, meteor dust, and stratospheric rainfall are not the controlling causes.
Frequently asked questions
What is the correct answer to this question?
Strong horizontal temperature and pressure gradients
Why is this the correct answer?
Jet streams are narrow bands of very strong, predominantly west-to-east winds near the upper troposphere and tropopause. Unequal heating across latitudes creates strong horizontal temperature contrasts, which are associated with pressure gradients aloft; Earth’s rotation then organizes the flow into fast, nearly geostrophic winds. Thus option D is correct. Exospheric escape, meteor dust, and stratospheric rainfall are not the controlling causes.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
