Here's why:
* Convection Currents: The Earth's surface is unevenly heated by the sun, leading to differences in temperature. Warm air rises (less dense) and cold air sinks (more dense), creating these circular patterns called convection currents.
* Temperature Differences: The jet stream forms at the boundary between these warm and cold air masses. This temperature difference creates a pressure gradient, which drives the fast-moving winds.
* Jet Stream Formation: The jet stream is a high-altitude river of air that flows from west to east, usually in a meandering pattern. There are two main jet streams in each hemisphere: the polar jet stream and the subtropical jet stream.
Let me know if you'd like to know more about the jet streams!
