1. When the jet stream exhibits zonal flow, surface highs andlows are generally ________ and move eastward across the UnitedStates relatively ________. Group of answer choices
weak, slow
strong, slow
weak, fast
strong, fast
For a surface low-pressure center to intensify, the upper-leveltrough should be located ________ the surface low.
Group of answer choices
to the east of
to the west of
directly over
When the jet stream exhibits meridional flow, surface highs andlows are generally ________ and move eastward across the UnitedStates relatively ________.
Group of answer choices
weak, slowly
strong, fast
weak, fast
strong, slowly
The vertical pressure gradient force in the atmosphere istypically about 10,000 times the magnitude of the horizontalpressure gradient force, yet vertical motions are normally muchsmaller than horizontal motions. This is due to the ________.
Group of answer choices
negligible Coriolis effect in vertical motion
equal and opposite reaction of the earth’s surface to thedownward directed vertical pressure gradient force
opposing and near-balancing force of gravity acting downward onair
fact that gravity does not act on horizontally moving airparcels
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