Strongly developed cumulus clouds are an indication of ? [ MCQ aircraft ]

Question 150-1 : Instability in the atmosphere the presence of a low level inversion poor surface visibility the presence of warm air aloft

Clouds classified as being low level are considered to have bases from ?

Question 150-2 : The surface to 6500 ft 1000 to 2000 ft 500 to 1000 ft 100 to 200 ft

Which of the following are medium level clouds ?

Question 150-3 : Altostratus and altocumulus cirrocumulus and cirrostratus cumulonimbus all convective clouds

Cumulus clouds are an indication for ?

Question 150-4 : Up and downdrafts stability the approach of a cold front the approach of a warm front

A generally grey cloud layer with fairly uniform base and uniform appearance ?

Question 150-5 : Stratus altostratus nimbostratus cirrostratus

The presence of altocumulus castellanus indicates ?

Question 150-6 : Instability in the middle troposphere strong convection at low height stability in the higher troposphere subsidence in a large part of the troposphere

In an area of converging air in low level ?

Question 150-7 : Clouds can be formed convective clouds can be dissolved stratified clouds can be dissolved clouds can not be formed

When the temperature and dew point are less than one degree apart the weather ?

Question 150-8 : Fog or low cloud clear and cool high scattered clouds unlimited visibility

The morning following a clear calm night when the temperature has dropped to ?

Question 150-9 : Radiation fog a cold front advection fog good clear weather

Advection fog can be formed when ?

Question 150-10 : Warm moist air flows over a colder surface cold moist air flows over a warmer surface warm moist air flows over a warmer surface cold moist air flows over warmer water

Steaming fog arctic sea smoke occurs in air ?

Question 150-11 : With cold mass properties with warm mass properties that is absolutely stable that is stable

Frontal fog is most likely to occur ?

Question 150-12 : In advance of a warm front in rear of a warm front in summer in the early morning in winter in the early morning

Freezing fog exists if fog droplets ?

Question 150-13 : Are supercooled are frozen are freezing very rapidly freeze when temperature falls below zero

Which of the following circumstances most favour the development of radiation ?

Question 150-14 : Moist air over land during clear night with little wind warm moist air at the windward side of a mountain maritime tropical air flowing over cold sea advection of very cold air over much warmer sea

Fallstreaks or virga are ?

Question 150-15 : Water or ice particles falling out of a cloud that evaporate before reaching the ground strong downdraughts in the polar jet stream associated with jet streaks gusts associated with a well developed bora strong katabatic winds in mountainous areas and accompanied by heavy precipitation

The range of wind speed in which radiation fog is most likely to form is ?

Question 150-16 : Below 5 kt between 10 and 15 kt between 5 and 10 kt above 15 kt

At the top of orographic waves in mountainous regions the cloud most likely to ?

Question 150-17 : Altocumulus lenticularis cirrostratus cirrus cumulus mediocris

A cumulus congestus is ?

Question 150-18 : A cumulus that is of great vertical extent a remnant of a cb a cumulus with little vertical development a cumulus that only occurs in association with the itcz

Clouds in patches sheets or grey or whitish layers made up of elements ?

Question 150-19 : Stratocumulus stratus altostratus nimbostratus

In mid latitudes the tops of cumulus are often limited by ?

Question 150-20 : A temperature inversion a layer of unstable air a radiation inversion the tropopause

Of what does lenticular cloud provide evidence ?

Question 150-21 : Mountain waves jet streams stratospheric inversions areas of high level clear air turbulence

The formation of morning fog before sunrise is possible if ?

Question 150-22 : Air temperature and dew point are equal or close to one another the wind is strong the sky is overcast the turbulence in the lower layers is moderate

What is the difference between radiation fog and advection fog ?

Question 150-23 : Radiation fog forms due to surface cooling at night in a light wind advection fog forms when warm humid air flows over a cold surface radiation fog forms only on the ground advection fog only on the sea radiation fog forms due to night cooling and advection fog due to daytime cooling radiation fog is formed by surface cooling in a calm wind advection fog is formed by evaporation over the sea

When fog is reported the visibility is below ?

Question 150-24 : 1 km 0 8 km 1 5 km 3 km

When visibility is reduced by water droplets to less than 1000 metres it is ?

Question 150-25 : Fog dust fog drizzle mist

Which cloud type may indicate the presence of severe turbulence ?

Question 150-26 : Altocumulus lenticularis stratocumulus nimbostratus cirrocumulus

Which is true of advection fog ?

Question 150-27 : It can appear suddenly by day or by night it develops slowly and clears fast it forms when unstable air is adiabatically cooled it usually forms by night and clears by day

Which of the following sets of conditions are most likely to lead to the ?

Question 150-28 : A mild moist airstream flowing over colder surfaces with the wind speed less than 15 kt clear skies at night over an inland marshy area a mild moist airstream flowing over colder surfaces with a wind in excess of 30 kt cold maritime air flowing over a warmer land surface at a speed greater than 15 kt

Which of the following types of cloud can extend over the low medium and high ?

Question 150-29 : Cb ac st ci

Which of the following types of clouds are evidence of unstable air conditions ?

Question 150-30 : Cu cb st cs sc ns ci sc

Which type of fog can not be formed over water ?

Question 150-31 : Radiation fog advection fog arctic smoke frontal fog

Stratus formed by turbulence will occur when ?

Question 150-32 : In the friction layer mixing occurs by turbulence and the condensation level is situated below the top of the turbulent layer the wind speed is less than 10 kt and the air is heated by the earth's surface the wind speed is greater than 10 kt and the condensation level is situated just above the turbulent layer absolute instability exists at low level

Radiation fog most frequently occurs in ?

Question 150-33 : High pressure systems over land low pressure systems over sea high pressure systems over sea low pressure systems over land

What kind of fog is often observed in the coastal region of newfoundland in ?

Question 150-34 : Advection fog frontal fog radiation fog steaming fog

Which statement is correct ?

Question 150-35 : Fog can be supercooled and can also contain ice crystals mist and haze consist of water droplets fog and haze do not occur in the tropics mist and haze only differ by different values of visibility

The cloud type most applicable to square 3c is . 355 ?

Question 150-36 : Ns cb ac as

The cloud type most applicable to square 2d is . 356 ?

Question 150-37 : As cu cb cs

The cloud most likely to be experienced in square 1e is . 357 ?

Question 150-38 : Ci ac as cb

If radiation fog forms on a clear night with light winds the increase in wind ?

Question 150-39 : Cause the fog to lift and become low stratus change the radiation fog to advection fog have no effect disperse the fog immediately

Clouds will mainly consist of supercooled water droplets when the temperature is ?

Question 150-40 : Between 0°c and 15°c between 5°c and 30°c between 30°c and 40°c below 40°c