Which of the following best describes ldquo jet streams rdquo ........

General Science (Easy) Chemistry

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Which of the following best describes “jet streams”?

Wind system with seas and reversal of direction.

Wind blowing from sub tropical high pressure belts towards the tropical low pressure belts.

Narrow meandering bands of winds which blow in mid latitude near the tropopause and encircle the globe.

Winds blowing from the tropical high pressure belts towards the equatorial low pressure belts.

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Explanation:

Jet streams are fast flowing, narrow air currents found in the atmospheres. The main jet streams are located near the tropopause, the transition between the troposphere and the stratosphere. The major jet streams on Earth are westerly winds (flowing west to east). The strongest jet streams are the polar jets, at around 7-12 km (23,000-39,000 ft) above sea level.