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WorksheetsCPL Met Exam Prep
Total questions: 62
Worksheet time: 31mins
If a flight crew sees volcanic activity, what do they need to advise in their report?
A basic description of the volcanic activity
The location of the Volcanic activity, and any associated weather conditions
Location and vertical extent of the ash cloud
Callsign, position, time, altitude or flight level, location of activity observed, air temperature, spot wind and a brief description of vertical extent of ash cloud
State the latitudes where diurnal variation of pressure is the greatest?
Polar regions
Equatorial regions
Mid latitudes
The same throughout the world
As an aircraft, cruising at the freezing level, crosses out of a cold front – what air will the aircraft be entering, and where will the aircraft now be relative to the freezing level?
Warmer air, above the FZL
Warmer air, below the FZL
Colder air, above the FZL
Colder air, below the FZL
What does VCSH mean?
Showers in the Vicinity
Volcanic Ash
Volcanic Showers
In regards to a STOL (short takeoff and landing) aircraft, why is ice accretion less on the wings than on other surfaces such as propellers and ariels?
Friction provides heating to bring the aircraft’s wing temperature above 0°C
The stagnation point in front of the leading edge of the wing creates an area of high pressure which reduce ice accretion
Aircraft cruise at lower speeds and altitudes
There is a greater surface area for ice to accumulate onto
Under independent Cumulus clouds, what stability will the air have?
Stable
Unstable
Conditionally stable
Inversion
How will Volcanic Ash affect aircraft?
Flameout due to engine overheating
Affects piston and turbine engines the same
Doesn’t affect turbines
Ash causes blockage of airflow in a turbine engine causing flameout
When is the SPCZ most active?
Summer
Winter
When the ITCZ is active
When the ITCZ is inactive
How is RVR measured on the runway?
By the pilot reporting the amount of runway lights visible
At three sensors along the runway (Touchdown zone, mid point, stop end)
By an AWS placed at the aerodrome
Chose the correct statement below
If wind is westerly, A and B are Troughs and C and D are ridges
If wind is southerly, ABCD will be a COL
If wind is easterly, A and B are Troughs and C and D are ridges
If Wind is northerly, ABCD will be a COL
What is the duration of a tropical cyclone Sigmet?
Two hours
Four hours
Six hours
Eight hours
What do Kelvin Helmholtz clouds look like?
Pyramid shaped clouds
Clouds shaped like crashing waves
Rolling waves
Large layer-type stable cloud
Where is the bulk of the atmospheric turbulence found?
Friction Layer
Troposphere
Stratosphere
Mesosphere
When will condensation occur?
When air becomes super-saturated
When air temperature rises above its dew point
When moist air rises
When air temperature cools and reaches its dew point
What do the trade winds aid in?
Heat distribution
Volumetric efficiency
Stability
Calculate the cloud base from convective rising with an
ELR of 4°/1000', dew point = 15°, Sea Level Temp = 20°
stratus type cloud, 1700'
cumulus type cloud, 1700'
stratus type cloud, 3300'
cumulus type cloud, 3300'
What is atmospheric convection?
The rising of air caused by heating between different layers of air
The rising of air through radiation
The rising of air from the hotplate effect
The horizontal movement of air
What temperature lapse rate would be found immediately below the cloud?
DALR: 3°/1000'
SALR: 3°/1000'
DALR: 1.5°/1000'
SALR: 1.5°/1000'
What is the AAW wind speed and direction at 4000'?
305°T 35kt
310°M 35kt
300°T 50kt
305°M 35kt
A Basic weather report is:
A verbal comment describing wind direction and strength, mean sea level air pressure, air temperature, weather conditions and cloud cover
An automatic broadcast of aerodrome and weather information provided specifically for the facilitation of aviation
Is conducted during map preparation, collection of and interpretation of relevant weather
Telecommunication from an ATC unit of significant weather
What stage is it describing when the pressure values are approaching 1000hpa and one quadrant is at gale force winds?
Formative
Immature
Mature
Decaying
What are the conditions that will lead to Nimbostratus/snow on the east coast of NZ?
High pressure system off the west coast of the North Island
Low pressure system off the east coast of the South Island
A Col if it sits over the south island for at least 7 days
High pressure system off the east coast of the South Island
What causes the worst turbulence in regards to mountain waves
High amplitude mountain waves with rotor zones
Low amplitude mountain waves with rotor zones
High amplitude mountain waves without rotor zones
Low amplitude mountain waves without rotor zones
What are the conditions on the lee side of a mountain for a Fohn wind?
Warm, dry, gusty
Warm, stratiform cloud, gusty
Cold, drizzle, strong low level winds
Cold, showers, mid level winds
In a warm column of air a barometer reads 890hPa, if you hold the same vertical height in a cold column of air what will the pressure be?
Higher
Lower
No change
Higher initially then lower
Given that K (Kelvin) is used for many meteorological calculations, covert 25°C to K
-248 K
298 K
248 K
-298 K
A Vietnam Airlines A350 aircraft on approach to land into Christchurch is descending into the friction layer. During the Descent, the pilot may notice that the wind will
Veer and Increase
Veer and Decrease
Back and Increase
Back and Decrease
Altocumulus standing lenticular clouds form
Windward side below mountain
Windward side above mountain
Lee side below mountain
Lee side above mountain
What does BKN018/// mean on a METAR AUTO?
Broken 1800ft cloud detected unable to determine TCU/CB
Broken 1800ft weather not detected due sensor temporarily inoperative
Broken 1800ft visibilty not reported due faulty sensor
Broken 1800ft cloud not reported due faulty sensor
Polar air moving toward the equator is
Stable cumuliform
Stable stratiform
Unstable cumuliform
Unstable stratiform
As latitude increases coriolis force
Stays the same
Increases
Decreases
Increases then starts to reduce towards the poles
What does SIGMET 8 mean on this picture?
8th SIGMET issused since 0000UTC
8th SIGMET issused since 0000NZST
8th SIGMET issused since the 1st of the month
8th SIGMET issused since Monday
South pacific convergence zone winds are from the
SE and NE
SW and NE
SE and NW
SW and NW
What do the three solid black lines east of Australia represent?
Ridge
Trough
Cold front
Isobar
What height do the trade winds stop?
5,000 ft
8,000 ft
12,000 ft
15,000 ft
Explain the Bergeron process
Ice particles growing by deposition at the expense of water droplets
Water vapour changing to ice and then melting as it falls
Water droplets colliding and growing at the expense of ice crystals
Ice particles splitting apart and multiplying to form a large amount of ice nuclei to deposit onto
What cloud is associated with asperitas cloud?
Altostratus and stratocumulus
Cirrus
Nimbostratus and low level cloud
Stratus and wave type cloud
You are flying through cloud and see that the outside air temperature is -10°C. What type of icing are you likely to encounter?
Clear
Rime
Impact
Carburetor
Where would a weather system need to be in order to get blowing snow at NZCH airport?
Anticyclone off the east coast of NZ covering eastern part of Canterbury area. This will have blowing snow and contaminated runway
Cyclone off the east coast of NZ covering eastern part of Canterbury area. This will have blowing snow and contaminated runway
Cyclone off the west coast of NZ covering eastern part of Canterbury area. This will have blowing snow however the runway will not be contaminated
Anticyclone off the west coast of NZ covering western part of Canterbury area. This will have blowing snow however the runway will not be contaminated
Supercooled water droplets are ____ and can occur in temperatures as cold as ____ if un disturbed
stable, -15º
stable, - 40º
unstable, -15º
unstable, - 40º
Where does the negative charge sit in a thunderstorm?
Freezing level/Mid cloud
On the sides of the cloud
Underneath the cloud base
At the top of the cloud
The trade winds are found _______ and go to a height of ____ft
between 30ºN and 30ºS, 8000
along the equator, 8000
between 30ºN and 30ºS, 5000
along the equator, 5000
What is the height of the troposphere over the equator?
25000ft
36000ft
45000ft
60000ft
What happens to the pressure immediately behind a warm front?
increases
arrest or at fall
decreases
no change from ahead if the front
What happens to the pressure and temperature as a warm front passes?
Pressure will be arrest or at fall and temperature will increase
Pressure will be arrest or falling and temperature will have little change from ahead of the front
Pressure will be decrease and temperature will increase
Pressure will be increase and temperature will decrease
What happens to the wind after a warm front passes?
Veer and slight increase in strength
Backs
Fairly steady in direction and speed
Initially backs and then veers
Where would you find the greatest wind strength in a tropical cyclone?
In the cyclone eye
Around the outside of the eye in the eye wall
In the upper levels of the storm
On the sides of the storm
In regards to avoiding wind-shear which statement is not true?
Fly on the windward side of the mountain
Stop and wait until the wind-shear has passed
Increase speed to get through the wind-shear faster
Get above the wind-shear
In a basic thunderstorm during what stage is lightning most likely to occur and how much of the lightning stays in the cloud and how much strikes the ground?
Mature stage, 20% stays in the cloud and 80% strikes the surface
Mature stage, 80% stays in the cloud and 20% strikes the surface
Growing stage, 65% stays in the cloud and 35% strikes the surface
Growing stage, 35% stays in the cloud and 65% strikes the surface
What four components makeup wind?
Pressure gradient force
Coriolis force
Centripetal force
Friction force
Centrifugal force
What is QNH?
Taken from a station and reduced to MSL using assumed figures and gives height above MSL
Taken from MSL and gives height above MSL using assumed figures
Taken from a station and reduced to MSL using real time figures and gives height above aerodrome
Taken from MSL and gives height above MSL using real time figures
The geostrophic wind in the Southern Hemisphere:
Blows parallel to curved isobars
Blows parallel to straight isobars
Blows at right angles to curved isobars
Blows at right angles to straight isobars
What is the super-adiabatic lapse rate?
When the ELR is in between the SALR and DALR
When the ELR is less than the SALR
When the ELR is greater than the DALR
When the ELR is more than the SALR but less than the DALR
How does a nimbostratus cloud form?
Mechanical rising
At a warm front
High moisture content of air, with ascent of warm air over a small area
Large scale surface divergence
What is a flight level?
Altitude above sea-level in hundreds of feet, measured according to a standard atmosphere
Altitude above sea-level in thousands of feet, measured according to a standard atmosphere
Altitude above sea-level in hundreds of feet, measured according to the current atmosphere
Altitude above sea-level in thousands of feet, measured according to the current atmosphere
What does having a steeper pressure gradient mean?
larger change over a horizontal distance
larger change over a vertical distance
smaller change over a horizontal distance
smaller chance over a vertical distance
The tropopause at mid latitudes is _____ and _____ than at the poles?
higher and colder
higher and warmer
lower and colder
lower and warmer
What is measured when 3 sensors are placed down a runway?
Cloud base
RVR
Wind strength
VV
What weather is caused by light precipitation and low level stratus?
fog and mist
light drizzle
haze
virga
What will give you the strongest Coriolis force?
Increase in wind speed at the poles
Increase in wind speed at the equator
Decrease in wind speed at the poles
Decrease in wind speed at the equator
Coalescence is:
when small droplets fall they collide with others and fall together
when small droplets coalescence with others due to turbulence to make bigger rain drops
when coal aerosols are released into the air inducing the onset of precipitation early
when the windscreen has black bolts of light dance across it, caused by volcanic ash
When there is a strong wind on the windward side and a suction on the lee of the mountain, what is this?
mountain waves
rotor streaming
rotor zones
fohn wind
