Ch.4 Geography

vertical pressure gradient force and the force of gravity are normally of nearly equal valueand operate in opposite directions.

an apparent deflection do to the force of the earth spinning.

nonaccelerating flow, when the pressure gradient force equals the coriolis force.

a continual mismatch between pressure gradient and coriolis forces causing horizontal wind.

when the coriolis force exceeds the pressure gradient force and causes the air to turn

the existence of a weaker coriolis force than the pressure gradient causing the air to turn counterclockwise.

closed low pressure systems

enclosed areas of high pressure marked by roughly circular isobars

elongated areas of low pressure

elongated areas or high pressure

the degree of angle from due north moving clockwise