Question

A band of very fast wind that is formed by the different temperatures between huge convection currents is called a (convection current, jet stream)

Answer 1

band of wind is called a line.

Answer 2

Answer - Jet Stream.

Reasoning - Jet Stream are pretty much fast flowing and is followed by the hot or cold air within the boundaries which helps the (flow) of shifts.

Ty for waiting :) I was trying to back up my Answer. Thank you for being part of this community and allowing me to answer - Johny