Quiz
9/10
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Fragen in diesem Quiz (35)
1If you see lightning and then hear the associated thunder 10 seconds later, the lightning flash was about ________ mile(s) away.
- A3
- B4
- C1
- D2
2What is entrainment?
- Athe process of cool, dry air being pulled into a thunderstorm by the down draft
- Bwarm, moist air fed into a thunderstorm by the updraft
- Crotation from the parent cloud transferring into a tornado
- Da line of thunderstorms, one feeding into the next
3The Enhanced -Fujita Intensity Scale (EF-scale) is applied to:
- Atornadoes
- Btyphoons
- Clightening
- Dthunderstorms
4Which air mass type is generally found on the poleward side of a midlatitude cyclone
- AmP
- BmA
- CcP
- DcT
5A blocking high is caused by:
- Aan occluded front
- Bdivergence in the upper atmosphere
- Ca cutoff low
- Da persistent anticyclone
6Why is strong heating of the ground by the Sun associated with thunderstorms?
- Areduces the relative humidity
- Breduces the dew point
- Cincreases the pressure gradient
- Dleads to greater instability
7Drylines are capable of producing thunderstorms because:
- Athe dry air mass forces the moist air to rise
- Bthe moist air mass lifts the dry air mass
- Cthere is an abrupt change in temperature across the dryline
- Dthe dry air mass is unstable and rising
8The general term applied to warm air moving up over a colder air mass is:
- Aoverrunning
- Bwarm front
- Ccold front
- Dorographic lifting
9The wind direction in a low pressure system is:
- Afrom the east
- Bfrom the NW
- Cfrom the north
- Ddépendant on your location relative to the storm center
10This is NOT a significant factor in explaining why the United States experiences so many tornadoes:
- Aspans wide range of latitudes
- Black of major east-west mountain range in east
- Cbordered by a cold ocean current on west coast
- Drelatively flat in eastern portion
11Which of the following best describes the phenomenon that typically develops at the surface beneath an area of divergence in the upper atmosphere?
- Adiffluence
- Bconfluence
- Ca low pressure system
- Da high pressure system
12Downdrafts totally dominate the ________ in the development of a thunderstorm.
- Adissipating stage
- Bmature stage
- Ccumulus stage
13Which type of lightning is least likely?
- Awithin the same cloud
- Bcloud to earth
- Ccloud to cloud
14A warm front is said to exist when:
- Aadvancing warm air overrides retreating cold air
- Bmoving cold air overrides warmer air
- Cwarm air pushes underneath cold air
- Dwarm air and cold meet
15When speed divergence occurs in the upper atmosphere, what effect does it have on cyclogenesis?
- AIt can either inhibit or enhance cyclogenesis, depending on the surface air temperature.
- BIt inhibits cyclogenesis by preventing cyclonic flow.
- CIt greatly enhances cyclogenesis by increasing convergence on the surface below.
- DIt has no impact whatsoever on the formation of mid-latitude cyclones.
- AIt can either inhibit or enhance cyclogenesis, depending on the surface air temperature.
16Structural damage from tornadoes is usually caused by
- Ahigh winds
- Blarge hailstones
- Cpressure differences between the inside of the structure and the outside air
- Da lack of conservation of angular momentum
17Why is the number and intensity of wave cyclones greatest during the late fall, winter and spring months?
- Atemperature contrasts are greater
- Btemperatures are below freezing
- Cdensity of the air is greatest
- Dair is drier then
18When the area of rotation of a mesocyclone decreases in size, its wind speed ________.
- Aincreases
- Bdecreases
19A wind shift in a clockwise direction, as from south to west, is termed ________ wind shift.
- Abacking
- Bfrontal
- Cveering
- Danticyclonic
20The width or horizontal extent of a typical mid-latitude low pressure system would be:
- A50-100 km
- B5-10 km
- C1000 km
- D10,000 km
21The theory postulated in the early part of the twentieth century to describe the formation, development, and dissipation of midlatitude cyclones is known as which of the following?
- Athe rossby wave theory
- Bthe polar front theory
- Ccyclogenesis
- Dtemperature advection
22An air mass thunderstorm rarely lives long enough to create very severe weather because:
- Athe downdrafts quickly become strong enough to stop the updraft and influx of moisture to the storm.
- Bthe atmosphere is generally fairly stable when these storms develop.
- Cthere is rarely enough moisture available to keep the storm alive for longer than 30 minutes.
- Dwind shear causes the storm's updraft to become tilted.
- Athe downdrafts quickly become strong enough to stop the updraft and influx of moisture to the storm.
23Which of the following statements is not true of tornadoes?
- Agenerally move from the southwest toward the northeast
- Busually occur along the warm front of a midlatitude cyclone
- Cmost common in the midwest and great plains
- Dassociated with cumulonimbus clouds
24The gust front occurs:
- Aduring the development of thunderstorm clouds
- Bnear the anvil part of a thunderstorm cloud
- Cat the leading edge of a thunderstorm downdraft
- Don the lee shore of the great lakes
25Refer to the diagram of a thunderstorm above to answer the following questions. The feature identified by Letter D is:
- Athe gust front
- Ba cold front
- Cthe storms anvil
- Dexperiencing very calm conditions
26Of the following states, which is struck by the largest number of tornadoes?
- ANC
- BOhio
- COklahoma
- DNew Mexico
27Thunderstorms can be associated with these weather activities:
- Acyclones
- Bhurricanes
- Ctornadoes
- Dcyclones, hurricanes, tornadoes
28Another common term for the wave cyclone is:
- Atropical cyclone
- Bpolar front cyclone
- Cintertropical convergence zone
- Dmidlatitude cyclone
29A dryline causes uplift to occur because:
- Athe intruding air mass is colder and more humid than the lifted air mass.
- Bthe lifted air mass is moister than the intruding air mass.
- Cthe lifted air mass is dryer than the intruding air mass.
- Dthe intruding air mass has the same low humidity as the lifted air mass.
- Athe intruding air mass is colder and more humid than the lifted air mass.
30An overshooting top means that:
- Aa thunderstorm will definitely produce a tornado
- Bthe thunderstorm has very strong updrafts causing the cloud to grow into the stratosphere
- Cthe thunderstorm is dissipating.
- Dlightning strikes will be especially intense.
- Aa thunderstorm will definitely produce a tornado
31Thunderstorms and large cumulus clouds are characteristic of:
- Aall polar air masses.
- Ball warm fronts.
- Cunstable air.
- Dstable air.
- Aall polar air masses.
32________ are relatively narrow, elongated bands of thunderstorms that develop in the warm sector of a middle-latitude cyclone, usually in advance of a cold front.
- Aroll clouds
- Bmesocyclones
- Csquall lines
- Dsupercells
33Which association is incorrect?
- Atornado watch a tornado has been sighted on the ground
- Bdowndraft precipitation
- Canvil - front of the thunderstorm
- Dmesocyclone region of tornado formation
- Atornado watch a tornado has been sighted on the ground
34Tornadoes are least common in
- Aaustralia
- Bnorth africa
- Cnorth america
- Dcentral europe
35The more violent nature of weather produced by a cold front can be attributed to which two factors?
- Athe gradual slope and fast forward motion of the front
- Bthe steep slope and fast forward motion of the front
- Cthe gradual slope and slow forward motion of the front
- Dthe steep slope and slow forward motion of the front
Informationen
- Beschreibung
- Quiz am 9/10, erstellt von astrass132 am 09/12/2014.
- Autor
- astrass132
- Sprache
- English
- Aufrufe
- 9
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