Question

What causes polar jet streams to form?(1 point) Responses rapid changes in wind direction rapid changes in wind direction high-pressure systems high-pressure systems air masses moving away from each other air masses moving away from each other warm and cold air masses

Answer 1

Polar jet streams form primarily due to the temperature differences between warm and cold air masses. The contrast between the polar regions (cold air) and the warmer air found at lower latitudes creates a strong wind pattern that can lead to the development of jet streams. Therefore, the best response from the options provided is:

**warm and cold air masses**.