Question
What causes polar jet streams to form? (1 point)
warm and cold air masses
air masses moving away from each other
high-pressure systems
rapid changes in wind direction
warm and cold air masses
air masses moving away from each other
high-pressure systems
rapid changes in wind direction
Answers
GPT-4o mini
Polar jet streams are primarily caused by **warm and cold air masses**. The contrasting temperatures between polar air (cold) and tropical air (warm) create a strong temperature gradient, which generates the jet streams in the upper levels of the atmosphere.