Quiz
12. Thunderstorms
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Perguntas do quiz (10)
11- The conditions which must exist to allow thunderstorms to develop are:
- AA trigger action, a plentiful supply of moisture and a very stable atmosphere.
- BA steep lapse rate, a stable atmosphere through a large vertical extent and a plentiful supply of moisture.
- CA plentiful supply of moisture and a steep lapse rate through a large vertical extent and a trigger action.
- DA steep lapse rate through a large vertical extent, a low relative humidity and a trigger action.
22- Hazards of the mature stage of a TS cell include lightning, turbulence and:
- AMicroburst, windshear and anvil.
- BIcing, microburst and windshear.
- CIcing, drizzle and microburst.
- DWindshear, hail and fog.
33- Thunderstorms require a trigger action to release the conditional instability. Which of the following woud be the least suitable as a trigger:
- ACovergence in temperate latitudes.
- BConvergence in tropical latitudes.
- CSubsidence in tropical latitudes.
- DConvection in polar latitudes.
44. During the _____ stage of a thunderstorm cell, the cloud contains _____ . Complete the above statement correctly using one o
- ABuilding / up currents and down currents.
- BMature / up currents and down currents.
- CDissipating / up currents and down currents.
- DBuilding / down currents only.
55- The following is unlikely to be a hazard below a thunderstorm:
- ASevere turbulence.
- BSevere icing.
- CWindshear.
- DLarge variations in pressure setting values.
66- Thunderstorms are likely if:
- AAir is unstable, there is sufficient water vapour and there is a trigger action.
- BAir is completely stable, there is sufficient water vapour and there is lifting orographically.
- CThere is a warm front.
- DThere is a col in winter.
77- Hail grows by:
- AFreezing as it leaves the cloud.
- BBy up and down progress in CU cloud.
- CBy collision with supercooled water drops.
- DBy collision with ice crystals.
88- How long approximately does a Cumulonimbus cell take to complete the full cycle from the Cumulus (building) to dissipating stage?
- A2-3 hours.
- B1-2 hours.
- C4-5 hours.
- DAbout 1 hour
99- A microburst usually lasts for _____ and is about _____ across.
- A20 minutes. 20 nm.
- B5 minutes. 5 km.
- C30 minutes. 10 km.
- D45 minutes. 5 nm.
1010- When flying through an active CB cloud, lightning strikes are most likely:
- AAbove 5000' and underneath the anvil.
- BIn the clear air below the the cloud in rain.
- CIn the temperature band between +10ºC and -10ºC.
- DAt about 10000 ft above AMSL.
Informações
- Descrição
- Tema 1 Meteo Quiz sobre 12. Thunderstorms, criado por Jose Antonio Vazquez em 05-01-2018.
- Autor
- Jose Antonio Vazquez
- Idioma
- Español
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