This document contains a multi-part question about an upper-level jet streak in the Northern Hemisphere. It asks the reader to: 1) label regions of upper-level divergence and convergence on a diagram of the jet streak and indicate expected rising or sinking motion below each area; 2) explain physically why the entrance region has the vertical motion drawn in part a; and 3) sketch the circulation in the vertical plane of the jet entrance region by drawing height surfaces and arrows.