WX 201 - Exam 2 Questions and Answers

WX 201 - Exam 2 Questions and Answers The subtropical jet stream is usually found between ________. 20 degrees to 30 degrees latitude, 200-mb level The summer monsoon in eastern and southern Asia is characterized by ________. wet weather and winds blowing from sea to land The wind around a surface high pressure center in the Northern Hemisphere, blows _______ and outward from the center. clockwise Both the polar front jet stream and the subtropical jet stream are found at which level of the atmosphere? the tropopause If upper-level divergence exceeds surface convergence, the air pressure at the center of the surface low will ________. decrease The world's deserts are found at 30 degrees latitude because ______. of the sinking air of the subtropical highs The main difference between a cloud drop and a raindrop is its _______. size A stationary front does not move because _______. the winds blow parallel to the front Thermal turbulence above the surface is usually most severe during maximum surface heating A(n) _______ on an upper-level isobaric chart indicates higher-than-average heights. ridge Because of_____, surface winds move more slowly than winds aloft with the same pressure gradient friction Which of the following is associated with rising air motions in a mid-latitude cyclone? convergence of air at the surface A valley breeze develops its maximum strength in the early afternoon because they occur when warm air rises up the sides of the valley. True According to the model of the life cycle of a wave cyclone, the storm system is normally most intense _____. when the system first becomes occluded Atmosphere shortwave throughs usually move ______ long-waves, and _____ when they move through a longwave ridge. faster than; weaker Atmosphere conditions that produce sleet differ from those that produce hail because for sleet to form, surface temperatures must be below freezing, whereas surface temperatures are typically well above freezing during hailstorms. True Chinook winds are typically found in the interior west of North America where the Canadian prairies and the Great Plains parallel mountain ranges. The winds can be described as ______. warm, dry downslope winds Rain that falls from a cloud but evaporates before reaching the ground is referred to as ______. virga Most of the United States is located within the prevailing easterlies wind belt False Found in certain regions of the cloud formation, a supercooled cloud droplet is _____. a liquid droplet observed at temperatures below 0 degrees Celsius (32 degrees Fahrenheit) Which statement describes the polar front jet stream? It forms near the boundary called the polar front Phenomena on the _____ scale can span over 1000s of kilometers and last for many days. Mid-latitude cyclones, hurricanes, and fronts are examples of this scale of weather events meso Developing low pressure areas in mid-latitude cyclones generally have converging air near the surface and diverging air aloft. True Condensation onto hygroscopic nuclei is possible at relative humidity less than 100 percent due to the _____. solute effect Vorticity refers to the _____. spin of air parcels