Chapter 7

The "eye" of the hurricane is a zone characterized by ________. 1) A) sinking air B) the most severe winds in the storms C) tremendous amounts of precipitation D) a radius of approximately 1,000 kilometers E) many tornadoes

Fronts are located ________. 2) A) with respect to motion, to the rear of air masses B) underneath air masses C) near air masses D) at the edges of air masses E) in the middle of air masses

________ is a distinguishing feature of thunderstorms. 3) A) Clouds of horizontal development B) An anvil top C) A cirrus cloud base D) Scant vertical development E) Ground fog

In the Northern Hemisphere, a midlatitude cyclone has winds that circulate ________. 4) A) clockwise while converging B) counterclockwise while converging C) counterclockwise while diverging D) clockwise while diverging E) from east to west

Cyclogenesis occurs along the________. 5) A) edge of a hurricane B) occluded front C) polar front D) center of the subtropical high E) edge of a baugio

Midlatitude cyclones contain several well-defined channels of air called ________. 6) A) fronts B) Rossby waves C) the stratus layer D) the conveyor belt E) the eye

Tropical cyclones tend to cause the greatest loss of life on the ________. 7) A) islands of the Caribbean. B) coast of Brazil C) Gulf Coast of the United States. D) Bay of Bengal. E) islands of the Philippines.

At any given time, how many extratropical cyclones might one expect to be in existence in the Northern Hemisphere? 8) A) 50 to 100 B) 6 to 15 C) 1 or 2 D) 25 to 50 E) 100 to 1000

A(n) ________ is the name for a tornado does not reach the ground. 9) A) mesocyclone B) funnel cloud C) anticyclone D) "EF-0" E) stratus cloud

On the average, ________ fronts move the fastest of all fronts. 10) A) stationary B) cold C) hot D) warm E) occluded

In which frontal type is there no "aggressor" air mass? 11) A) occluded B) cold C) stationary D) low E) warm

It can be said that along all the fronts in a middle latitude cyclone, ________. 12) A) cold air sinks B) precipitation is unlikely C) heavy rain occurs D) the pressure is high E) air rises

An easterly wave is on the order of ________ kilometers long. 13) A) 5-10 B) 10-20 C) 20-50 D) a few hundred E) a few thousand

Which of the following is a normal slope for a warm front? 14) A) 1:400 B) 1:10 C) 1:50,000 D) 1:200 E) 1:2,000

Which of the following best represents the length of the life cycle of a typical midlatitude cyclone? 15) A) 1 hour B) 1 month C) 1 year D) 1 day E) 1 week

A mature middle latitude cyclone takes on the shape of a ________. 16) A) wave B) circle C) wedge D) triangle E) loop

On a weather map, a symbol consisting of triangles arranged along one side of a line indicates a(n) ________ front. 17) A) stationary B) tropical C) cold D) warm E) occluded

The 1-5 scale rating of hurricane intensity is the ________ scale. 18) A) Fujita B) Likert C) Crawford D) P H E) Saffir-Simpson

Which type of front causes many hours of steady rain BEFORE that front passes a location? 19) A) warm B) cold C) tropical D) stationary E) dry line

Air near the Pacific coast of the southwestern United States is usually ________ than air over the Gulf Coast of the United States. 20) A) warmer B) more stable C) more stormy D) moister E) more polluted

Katrina was the ________ hurricane ever to hit the United States. 21) A) strongest B) most costly C) largest diameter D) least well forecasted E) most deadly

Stable anticyclones act as a ________ to moving cyclones. 22) A) cause B) block C) rainy counterpart D) friend E) catalyst

As a middle latitude cyclone goes through its life cycle, the warm sector ________. 23) A) gets larger B) subsides C) becomes warmer D) gets smaller E) travels from east to west

Which stage of a thunderstorm is associated with the coexistence of updrafts and downdrafts? 24) A) mature stage B) dilating stage C) contracting stage D) cumulus stage E) dissipating stage

On a NEXRAD computer screen, indications of strong winds flowing towards the radar adjacent to strong winds flowing away from the radar is evidence of a(n) ________ within a thunderstorm and would cause the radar operator to issue a tornado warning. 25) A) updraft B) anvil cloud C) rain area D) mesocyclones E) downdrafts

Which of the following is most closely associated with midlatitude cyclones? 26) A) cloud-free skies B) meridional flow in the upper westerlies C) subsidence of air above the surface cyclone D) stable air E) zonal flow in the upper westerlies

Which of the following occurs least over North America? 27) A) Maritime Tropical air from the Pacific B) Maritime Polar air from the North Atlantic C) Maritime Tropical air from the North Pacific D) Maritime Polar air from the Gulf of Alaska E) Arctic air from Siberia

The average hurricane exists, on the average, for about ________. 28) A) one week B) two weeks C) three weeks D) four weeks E) five weeks

The greatest annual number of hailstorms can be found in ________. 29) A) Texas B) Hawaii C) California D) Florida E) Colorado

The energy source of hurricanes is ________. 30) A) warm fronts B) thunderstorms C) cold fronts D) warm seawater E) the jet stream