The seven most missed questions on Unit Exam #3
7. Which of the following is not an important function of jet streams? (a) driving ocean currents, (b) supplying cold air
to building anticyclones, (c) removing air from developing cyclones, (d) steering and moving surface storms, (e) global
heat advection. (missed by 82% of class members)10. A cold front ahead of a mP air mass is overtaking a warm front along which an mT air mass is replacing a cA air mass.
The front in the region wherein the cold front has already overtaken the warm front would be best described as a/an
(a) cold front, (b) cold-type occluded front, (c) stationary front, (d) warm front, (e) warm-type occluded front. (76%)25. The axis of a low pressure trough at the 500-mb level sits directly over northern Utah. Which of the following statements
would likely best describe current and near-future weather? (a) Clouds are increasing and precipitation is imminent. (b)
Skies have been clear for several days and are expected to remain so. (c) Skies have been clear but are expected to give
way to increasing high clouds. (d) A passing storm is giving way to partial clearing and colder temperatures. (76%)37. In the absence of synoptic scale barometric pressure gradients, in regions where surface ocean temperatures are not
strongly affected by upwelling, a northern hemisphere sea breeze would tend to be strongest on an afternoon during the
month of (a) February, (b) May, (c) August, (d) November. (76%)39. Persistent high pressure tends to occur at latitudes (a) 0° and ±30°, (b) 0° and ±60°, (c) 0° and ±90°, (d) ±30° and ±60°,
(e) ±30° and ±90°, (f) ±60° and ±90°. (82%)42. A farmer stands in his wheat field, facing southwest, with the wind at his back. In what direction from the farmer's
position does the atmospheric pressure drop most rapidly? (Assume a standard Buys-Ballot's Law.) (a) east, (b)
southeast, (c) slightly east of south, (d) south, (e) slightly west of south, (f) southwest, (g) slightly south of west, (h) west,
(i) slightly north of west, (j) northwest. (82%)44. Which of the following systems involves eddies or parts of eddies in which the primary motions are in vertical planes
rather than nearly horizontal planes? (a) the south wind which precedes an approaching cyclone, (b) a dust devil, (c)
a hurricane, (d) a tornado, (e) a canyon wind, (f) the north wind which precedes an approaching anticyclone. (82%)