A wave pattern in the upper- level winds at middle latitudes in the Northern Hemisphere provides for:
A) colder temperatures at all latitudes.
B) cold air moving south.
C) decreased snowfall.
D) warm air moving south.

Question

Quizplus · Accepted Answer

The wave pattern in the upper-level winds, known as the jet stream, can cause cold air from the polar regions to move southward into middle latitudes, leading to colder temperatures in these regions.

A Wave Pattern in the Upper- Level Winds at Middle