ATSC 113 FLYING EXAM QUESTIONS WITH ALL CORRECT ANSWERS
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Module
ATSC 113 FLYING
Institution
ATSC 113 FLYING
ATSC 113 FLYING EXAM QUESTIONS WITH ALL CORRECT ANSWERS
What are the types of tornadoes - Answer- - funnel cloud = cloud droplets making the funnel visible
- debris cloud = dirt and debris making it visible
- sometimes both happen
Where do the strongest tornadoes come from - Answer- supe...
ATSC 113 FLYING EXAM QUESTIONS
WITH ALL CORRECT ANSWERS
What are the types of tornadoes - Answer- - funnel cloud = cloud droplets making the
funnel visible
- debris cloud = dirt and debris making it visible
- sometimes both happen
Where do the strongest tornadoes come from - Answer- supercell thunderstorms
What type of shapes are there for tornadoes - Answer- cone, v-shaped, wedge,
cylinder, hour-glass, rope
What hazards do tornadoes pose to aircraft - Answer- - extremely dangerous
- can rip off wings
- debris at fast winds are like bullets
How can a pilot avoid tornadoes - Answer- - it is difficult to forecast so just always stay
away from supercell thunderstorms
Heavy rain thunderstorm hazard - Answer- - not a hazard of thunderstorms
- but reduces visibility which is a hazard to VFR
- heaviest parts of rain are isolates showers so you can fly around
- exception is squall line which can be long
- ingestion of heavy rain into turbine engines can cause it to stop but is not that common
How do pilots stay informed about heavy rain - Answer- - airlines have weather radars
to detect heavy rain cells and change the flight
- flight service station via radio
- pilot reports
What are the government sources of aviation weather observations, analyses, and
forecasts in canada and the usa - Answer- canada = Aviation Weather Web Site
(AWWS)
usa = Aviation Weather Centre (AWC)
metarS - Answer- - used by pilots to learn observed weather air airports
,- text, not graphics with coded acronyms, abbreviations, and special fonts
- reported every hour
- can have a SPECI which is a special report to report sudden changes between regular
METARs
- only current weather, not future
TAFs - Answer- - forecasts of future weather produced by meteorologists
- text format
- coded same way as METARs
if clouds touch mountains, what is the ceiling - Answer- no ceiling
what is used to measure ceiling - Answer- - laser ceilometers (vertically pointing
machine that give accurate cloud base for clouds over airports)
- no accurate measures off vertical unless pilots report in PIREP
RVR is most like what type of visibility - Answer- horizontal visibility
if an air parcel is pushed in statically stable air, where would it go - Answer- starting
altitude
which type of thunderstorm is least dangerous to flight - Answer- MCV
A pilot in Canada can get official weather data via the Aviation Weather Web Site
(AWWS) - Answer- true
A pilot in the USA can get official weather data from NavAmerica and the US Weather
Bureau via the Aviation Weather Network (AWN) - Answer- false its aviation weather
centre (AVS)
does METAR give forecasts - Answer- no, TAF does
in which layer of the earth does temp increase with altitude - Answer- stratosphere
to measure static stability meteorologists first need to - Answer- launch a rrawinsonde to
measure the sounding
non turbulent air blowing over a mountain can become turbulent downwind of the
mountain if the air is - Answer- statically neutral
mechanical turbulence is caused by - Answer- wind shear
faster winds across mountains create - Answer- longer wavelengths (distance between
crests)
,the most violent (strongest amplitude) mountain waves occur when froude number is -
Answer- 1
APL/PBL - Answer- bottom 300m-4km of atmosphere
SPECI - Answer- when the weather changes a lot between the routine METARs so they
give a special report
are wave height forecasts reported for seaplane aerodromes - Answer- no
is aircraft icing possible in summer - Answer- yes
when an aircraft flies through regions of high liquid water content where drops are large,
the type of ice to form is - Answer- clear ice (larger ice flows a bit before freezing); rime
ice is smaller drops
how can frost form in warm humid air - Answer- when a cold aircraft descends into
warmer air, it can form in non cloudy air (like frost inside windows on cold night); frost
does not increase drag or decrease lift but can block view
what type of weather is at occluded fronts - Answer- - combo of widespread stratiform
and intense thunderstorms
- warmest air is pushed up
why can aircraft icing occur near occluded fronts - Answer- because of trough of warm
air aloft (TROWL)
what are the two types of clouds - Answer- normal and special
what are the two types of normal clouds - Answer- CU and ST
convective/cumiliform (CU) = clouds that look like a stack of cotton balls and are
associated with updrafts
Layer/stratiform (ST) = clouds that look like sheets or blankets and can extend hundreds
of km horizontally
how do convective/cumiliform (CU) clouds form (normal clouds type 1) - Answer- CU
clouds form when warm humid air rises through cooler surrounding air in the
atmosphere, and the buoyancy with the warm air drives strong updrafts.
This happens often when the air near the ground is colder than the actual surface of the
earth/ocean and the warm air rises.
what are the characteristics of convective/cumiliform (CU) clouds - Answer- - mostly flat
bases and somewhat near the ground
, - come in four sizes
- associated with updrafts
- used by birds and sailplanes who use the updrafts for a free lift
- can have weak downdrafts that cause some turbulence
what are the four sizes of convective/cumiliform (CU) clouds? - Answer- small =
cumulus humilis
medium = cumulus mediocris
large = cumulus congestus
extra large = cumulonimbus aka thunderstorms
thunderstorms are what type of cloud - Answer- extra large convective/cumuliform (CU)
clouds called cumulonimbus. these clouds are type 1 of the normal types of clouds, the
type 2 being stratiform clouds.
what are the effects of convective/cumiliform (CU) clouds? - Answer- - updrafts that
start at ground level and extend all the way to the top of the cloud
- weaker downdrafts that would cause a bumpy ride
- cat's paws (downdrafts hitting the water and causing rougher and darker patches of
water)
- wavy fields of grain
what are the hazards associated with cumiliform clouds - Answer- - strong updrafts
which in thunderstorms can be a hazard (lose control of the aircraft or break the aircraft)
how do layer/stratiform (ST) clouds form? - Answer- when warm air moves over a
wedge of cool air at ground level, causing the warm air to slide up along the top of the
surface of cold air because the warm air is more buoyant. when the warm air rises, it
cools which causes water vapor to condense which makes the cloud
what are layer/stratiform (ST) clouds associated with - Answer- warm fronts (because
the warm air moving over a wedge of cool air, causing the warm air to slide along the
cold air because of its buoyancy is typical of warm fronts); stratiform clouds can be often
found along warm frotns
what are the categories of stratiform clouds - Answer- high, middle, and low
high = cirrus, cirrostratus, and cirrocumulus
middle = altostratus and altocumulus
low = stratus and nimbostratus
what type of cloud is the halo associated with - Answer- cirrostrratus, which is in the
category of high for stratiform clouds
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