METEOROLOGY ATPL EXAM
QUESTIONS WITH CORRECT
ANSWERS
What is ICAO? - Correct Answers -A specialized agency of the United nations, it
codifies the principles and techniques of international air navigation and fosters the
planning and development of international air transport to ensure safe and orderly
growth
What is WMO? - Correct Answers -A specialized agency of the united nations. For
meteorology (weather and climate) operational hydrology and related geophysical
sciences
Who makes the upper air forecasts? - Correct Answers -Centres (WAFC)
Who makes the aerodrome forecasts- TAFor and Briefing documents? - Correct
Answers -Meteorological offices (MO) (veðurstofan)
Who makes SIGMET and AIRMET? - Correct Answers -Meteorological watch offices
(MWO) (veðurstofan)
Who makes the METAR, SPECI and MET reports? - Correct Answers -Aeronautical
meteorological stations (AMS) (veðurstofan)
Who gathers information on volcanic ash? - Correct Answers -The Volcanic Ash
Advisory Centres (VAAC)
Who gathers information on tropical cyclones? - Correct Answers -Tropical cyclone
advisory centres (TCAC)
What is the atmosphere? - Correct Answers -The spheroidal gaseous envelope
surrounding a heavenly body
Below how many km does the composition of main gases not vary with height (except
for ozone)? - Correct Answers -Below 60km
What are the constituents of the atmosphere? - Correct Answers -Nitrogen=78%
Oxygen=21%
,(main gases)
and then trace gases:
Argon=0,95%
Carbon dioxide= 0,04%
What are important characteristics of air? - Correct Answers -Air is a poor conductor
and it acts as a fluid
Earths atmosphere varies vertically and horizontally in..... - Correct Answers -Pressure,
temperature, density, humidity
The vertical variation of temperature (temperature lapse rate) provides basis for the
division of the atmosphere into distinctive layers
How is the structure of the atmosphere? - Correct Answers -1. troposphere 0-11km
2. stratosphere 11-50km
3. Mesosphere 50-80km
4.Ionosphere 80-700km
5. Exosphere +700km
How long up does the troposphere extend? - Correct Answers -Up to about 11 km
height (8-18 km depending on location)
How much mass does the troposphere have in the atmosphere? - Correct Answers -It
contains about 75% of the mass in the atmosphere, therefore almost all of the weather
How is the temperature in the troposphere? - Correct Answers -It decreases from the
surface upwards, caused by expansion of the air (1,98°C/1000' or 0,65°C/100m)
How is the troposphere at the poles, at the mid-latitudes and at the equator? - Correct
Answers -At the poles it is up to 8km (26000ft) and is up to -40°C, at the mid latitudes it
is up to 11 km (36000ft) and is up to -55°C and then at the equator it is up to 16km
(53000ft) and -75°C
What is the tropopause? - Correct Answers -It is a transition from the troposphere to the
stratosphere, it is defined as the place where the temperature no longer reduces with
increased height
How is the temperature and the height in the tropopause? - Correct Answers -
Temperature ranges from -40 (polar) to -80 (equator) but is on average -56,5°C at
11km, height is from 8-10km over the poles and 16-18 km over the equator
What is the definition of WMO? - Correct Answers -The boundary between the
troposphere and the stratosphere, where an abrupt change in lapse rate usually occurs.
It is defined as the lowest level at which the lapse rate decreases to 2°C/km or less
provided that the average lapse rate between this level and all higher levels within 2 km
does not exceed 2°C/km
, What does the tropopause height usually mark? - Correct Answers -The maximum
cloud height, the presence of jet stream, the presence of CAT (clear air turbulance or
TURB) and the maximum wind speed
Altitude of the tropopause varies with temperature and therefore..... - Correct Answers -
Time of year, latitude and time of day
What is the stratosphere and how is its height and temperature? - Correct Answers -It is
11-50km, the temperature there stops decreasing with height and initially remains
constant up to 20km.
Why does the temperature in the stratosphere start increasing with height? - Correct
Answers -Because of the ozone layer and the sun's ultraviolet radiation is absorbed in
the formation of ozone.
Is there any vapor in the stratosphere? - Correct Answers -No almost none, there are
nacreous clouds and mother of pearl clouds (glitský)
How is the height and temperature in the mesosphere and what kind of clouds can you
usually find there? - Correct Answers -50-80km, the lowest temperature is found there (-
73°C) and you can usually find noctillucent clouds there (silfurský)
Why does the air in the Ionosphere become ionized? - Correct Answers -Because of
sunrays (aurora borealis and radio waves)
What layer is above the ionosphere? - Correct Answers -The exosphere, which is the
outermost layer, the gas density there is very low
What changes as the aircraft operating altitude increases? - Correct Answers -The
concentrations of ozone and cosmic radiation become of greater importance to the
aviator
How is ozone classed? - Correct Answers -As a deep lung irritant and is extremely toxic
What are the symptoms of ozone poisoning? - Correct Answers -Nausea, coughing,
headaches, fatigue, dizziness, shortness of breath, chest pains, burning sensation in
the nose and throat and then loss of co-ordination and decreased ability to concentrate
In what height can you expect atmospheric hazards? - Correct Answers -Above 50.000ft
normal concentrations of ozone exceed tolerable limits and air needs to be filtered
before entering the cabin
Is cosmic radiation hazardous? - Correct Answers -No not normally, but at times of solar
flare activity a lower flight level may be necessary
QUESTIONS WITH CORRECT
ANSWERS
What is ICAO? - Correct Answers -A specialized agency of the United nations, it
codifies the principles and techniques of international air navigation and fosters the
planning and development of international air transport to ensure safe and orderly
growth
What is WMO? - Correct Answers -A specialized agency of the united nations. For
meteorology (weather and climate) operational hydrology and related geophysical
sciences
Who makes the upper air forecasts? - Correct Answers -Centres (WAFC)
Who makes the aerodrome forecasts- TAFor and Briefing documents? - Correct
Answers -Meteorological offices (MO) (veðurstofan)
Who makes SIGMET and AIRMET? - Correct Answers -Meteorological watch offices
(MWO) (veðurstofan)
Who makes the METAR, SPECI and MET reports? - Correct Answers -Aeronautical
meteorological stations (AMS) (veðurstofan)
Who gathers information on volcanic ash? - Correct Answers -The Volcanic Ash
Advisory Centres (VAAC)
Who gathers information on tropical cyclones? - Correct Answers -Tropical cyclone
advisory centres (TCAC)
What is the atmosphere? - Correct Answers -The spheroidal gaseous envelope
surrounding a heavenly body
Below how many km does the composition of main gases not vary with height (except
for ozone)? - Correct Answers -Below 60km
What are the constituents of the atmosphere? - Correct Answers -Nitrogen=78%
Oxygen=21%
,(main gases)
and then trace gases:
Argon=0,95%
Carbon dioxide= 0,04%
What are important characteristics of air? - Correct Answers -Air is a poor conductor
and it acts as a fluid
Earths atmosphere varies vertically and horizontally in..... - Correct Answers -Pressure,
temperature, density, humidity
The vertical variation of temperature (temperature lapse rate) provides basis for the
division of the atmosphere into distinctive layers
How is the structure of the atmosphere? - Correct Answers -1. troposphere 0-11km
2. stratosphere 11-50km
3. Mesosphere 50-80km
4.Ionosphere 80-700km
5. Exosphere +700km
How long up does the troposphere extend? - Correct Answers -Up to about 11 km
height (8-18 km depending on location)
How much mass does the troposphere have in the atmosphere? - Correct Answers -It
contains about 75% of the mass in the atmosphere, therefore almost all of the weather
How is the temperature in the troposphere? - Correct Answers -It decreases from the
surface upwards, caused by expansion of the air (1,98°C/1000' or 0,65°C/100m)
How is the troposphere at the poles, at the mid-latitudes and at the equator? - Correct
Answers -At the poles it is up to 8km (26000ft) and is up to -40°C, at the mid latitudes it
is up to 11 km (36000ft) and is up to -55°C and then at the equator it is up to 16km
(53000ft) and -75°C
What is the tropopause? - Correct Answers -It is a transition from the troposphere to the
stratosphere, it is defined as the place where the temperature no longer reduces with
increased height
How is the temperature and the height in the tropopause? - Correct Answers -
Temperature ranges from -40 (polar) to -80 (equator) but is on average -56,5°C at
11km, height is from 8-10km over the poles and 16-18 km over the equator
What is the definition of WMO? - Correct Answers -The boundary between the
troposphere and the stratosphere, where an abrupt change in lapse rate usually occurs.
It is defined as the lowest level at which the lapse rate decreases to 2°C/km or less
provided that the average lapse rate between this level and all higher levels within 2 km
does not exceed 2°C/km
, What does the tropopause height usually mark? - Correct Answers -The maximum
cloud height, the presence of jet stream, the presence of CAT (clear air turbulance or
TURB) and the maximum wind speed
Altitude of the tropopause varies with temperature and therefore..... - Correct Answers -
Time of year, latitude and time of day
What is the stratosphere and how is its height and temperature? - Correct Answers -It is
11-50km, the temperature there stops decreasing with height and initially remains
constant up to 20km.
Why does the temperature in the stratosphere start increasing with height? - Correct
Answers -Because of the ozone layer and the sun's ultraviolet radiation is absorbed in
the formation of ozone.
Is there any vapor in the stratosphere? - Correct Answers -No almost none, there are
nacreous clouds and mother of pearl clouds (glitský)
How is the height and temperature in the mesosphere and what kind of clouds can you
usually find there? - Correct Answers -50-80km, the lowest temperature is found there (-
73°C) and you can usually find noctillucent clouds there (silfurský)
Why does the air in the Ionosphere become ionized? - Correct Answers -Because of
sunrays (aurora borealis and radio waves)
What layer is above the ionosphere? - Correct Answers -The exosphere, which is the
outermost layer, the gas density there is very low
What changes as the aircraft operating altitude increases? - Correct Answers -The
concentrations of ozone and cosmic radiation become of greater importance to the
aviator
How is ozone classed? - Correct Answers -As a deep lung irritant and is extremely toxic
What are the symptoms of ozone poisoning? - Correct Answers -Nausea, coughing,
headaches, fatigue, dizziness, shortness of breath, chest pains, burning sensation in
the nose and throat and then loss of co-ordination and decreased ability to concentrate
In what height can you expect atmospheric hazards? - Correct Answers -Above 50.000ft
normal concentrations of ozone exceed tolerable limits and air needs to be filtered
before entering the cabin
Is cosmic radiation hazardous? - Correct Answers -No not normally, but at times of solar
flare activity a lower flight level may be necessary
