Quiz #4 Study Guide Pt. 1
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Newton's 1st
law of motion.
Given a picture of an object's motion, you
should be able to determine whether a net force is acting on the
object or not. If a net force is present, you should have some idea
what direction it must point.
Here
are some examples.
Forces that determine horizontal
winds. Pressure gradient force
(PGF), Coriolis force (CF), and frictional force (F) (surface winds
only).
Rules that determine the direction and strength of these forces.
Which force can start stationary air moving? Which of these forces
will only change the direction of the wind and not the wind speed?
Which one of these forces can only change the speed of the wind?
Upper level and surface winds.
Upper
level
winds blow parallel to the contours, surface winds blow across
the
isobars toward low pressure. You should know the directions that
upper level winds blow around circular high and low pressure centers in
the northern and southern hemisphere. In each case you
should be able to determine the directions of the PGF and CF. Here are lots
of examples to study.
How do surface
winds blow around H and L pressure centers in the northern and southern
hemispheres? Where do you find rising and sinking air motions? Here are
several examples.
Sample
Questions from the Fall
2000
quiz
packet
Quiz #5: 4, 12, 13,
EC2 Final Exam: 10, 13, 18, 26
Thermal
Circulations. Land/sea breezes. Horizontal
temperature differences
create upper level and surface pressure gradients. Given a clue
of somekind (a cloud) or one part of the circulation, you should be
able to determine the directions of the surface
and upper level winds and where the warm and cold parts of the picture
are.
Three-cell model.
You
should know the locations of the following
features: ITCZ,
equatorial low, horse latitudes, NE and SE trade
winds, subpolar low, polar front, doldrums, prevailing
westerlies, subtropical highs, polar highs, polar easterlies.
You should find each of these features in this figure.
With
which
3-cell
model features might you expect to find
abundant or infrequent rainfall?
Sample
Questions
Quiz #5: 1, 3, 6a, 9, 15 Final Exam: 24,
46