TC PPL Written Meteorology Exam
Questions With Complete Solutions
/.78% Nitrogen
21% Oxygen
Remainder includes argon, carbon dioxide, water vapour and several other gases -
Answer-✅What is the atmosphere made up of?
/.Water vapour - Answer-✅What is the most important gas from a weather standpoint?
/.Microscopic impurities such as salt, dust and smoke particles - Answer-✅What
reduces visibility, and has a function in the condensation process?
/.Mobility, capacity for expansion and capacity for compression. - Answer-✅What are
the main properties of the atmosphere, that are the cause for all atmospheric weather
phenomena?
/.Troposphere (ground to 28,000' at the poles, to 54,000' at the equator)
Stratosphere (50,000' above the tropopause)
Mesosphere
Thermosphere
The exosphere
Space - Answer-✅List the atmosphere's spheres
/.- high clouds
- middle clouds
- low clouds
- clouds of vertical development - Answer-✅What are the classification of clouds?
/.High clouds (16,500' to 45,000') Composed of Ice crystals
Cirrus (Ci): very high, thin, wavy, fibres, wisps
Cirrocumulus (Cc): thin, cotton-like
Cirrostratus (Cs): very thin, sun or moon is visible through, has halo effect, INDICATION
of APPROACHING WARM FRONT or OCCLUSION - Answer-✅Explain high clouds.
/.Cumulus: form in rising air currents and are evidence of unstable air
Stratus: form in horizontal layers and usually form as a layer of moist air that is cooled
to it's saturation point - Answer-✅Two basic types of clouds that explain how they form
are?
, /.Middle clouds (6,500' to 23,000') Composed of ice crystals or water droplets
Altocumulus (Ac): layer or series of patches of rounded masses of cloud
Altocumulus Castellanus (Acc): altocumulus with a turreted appearance, instability,
turbulence and showers
Altostratus (As): thick grey cloud that generally covers the whole sky, sun or moon can
be seen but disappears, INDICATES AN APPROACHING WARM FRONT, light snow or
rain - Answer-✅Explain middle clouds.
/.Low clouds (ground level to 6,500') Composed of water droplets which may be super
cooled sometimes
Stratus (St): uniform layer, looks like fog, drizzle is produced
Stratocumulus (Sc): layer or series of rounded masses or rolls, thin with blue sky breaks
Nimbostratus (Ns): uniform, dark grey, continuous rain or snow, ASSOCIATED with
WARM FRONTS - Answer-✅Explain low clouds.
/.Clouds of Vertical Development- Composed of water droplets that are sometimes
supercooled
Cumulus (Cu): dense cloud, thick, round, lumpy, cotton ball-like
Towering Cumulus (TCu): cumulus clouds that build up, likely to turn into cumulonimbus
Cumulonimbus (Cb): heavy masses of cumulus clouds, form an anvil shaped top -
Answer-✅Explain clouds of vertical development.
/.Clear: no clouds
Few: 2/8 or less
Scattered: 3 to 4 /8
Broken 5 to 7 /8
Overcast 8/8 - Answer-✅Explain the oktas that the metal reports cloud conditions.
/.Air that blows against a range of hills or mountains that causes it to be forced upwards,
reaching a region of lower pressure, expanding and cooling. - Answer-✅What is
orographic lift?
/.Warm air rising due to heating of the ground by the sun, rising currents of air occur.
This is known as convection. The downward movement of air is known as subsidence. -
Answer-✅What is convection?
/.When a mass of warm air advances on a colder mass. Warm air rises over the cool air
on a long slope, - Answer-✅What is frontal lift
/.29.92" of Mercury or 1013.2 hectopascals - Answer-✅What is standard pressure in
inches of mercury and hectopascal?
Questions With Complete Solutions
/.78% Nitrogen
21% Oxygen
Remainder includes argon, carbon dioxide, water vapour and several other gases -
Answer-✅What is the atmosphere made up of?
/.Water vapour - Answer-✅What is the most important gas from a weather standpoint?
/.Microscopic impurities such as salt, dust and smoke particles - Answer-✅What
reduces visibility, and has a function in the condensation process?
/.Mobility, capacity for expansion and capacity for compression. - Answer-✅What are
the main properties of the atmosphere, that are the cause for all atmospheric weather
phenomena?
/.Troposphere (ground to 28,000' at the poles, to 54,000' at the equator)
Stratosphere (50,000' above the tropopause)
Mesosphere
Thermosphere
The exosphere
Space - Answer-✅List the atmosphere's spheres
/.- high clouds
- middle clouds
- low clouds
- clouds of vertical development - Answer-✅What are the classification of clouds?
/.High clouds (16,500' to 45,000') Composed of Ice crystals
Cirrus (Ci): very high, thin, wavy, fibres, wisps
Cirrocumulus (Cc): thin, cotton-like
Cirrostratus (Cs): very thin, sun or moon is visible through, has halo effect, INDICATION
of APPROACHING WARM FRONT or OCCLUSION - Answer-✅Explain high clouds.
/.Cumulus: form in rising air currents and are evidence of unstable air
Stratus: form in horizontal layers and usually form as a layer of moist air that is cooled
to it's saturation point - Answer-✅Two basic types of clouds that explain how they form
are?
, /.Middle clouds (6,500' to 23,000') Composed of ice crystals or water droplets
Altocumulus (Ac): layer or series of patches of rounded masses of cloud
Altocumulus Castellanus (Acc): altocumulus with a turreted appearance, instability,
turbulence and showers
Altostratus (As): thick grey cloud that generally covers the whole sky, sun or moon can
be seen but disappears, INDICATES AN APPROACHING WARM FRONT, light snow or
rain - Answer-✅Explain middle clouds.
/.Low clouds (ground level to 6,500') Composed of water droplets which may be super
cooled sometimes
Stratus (St): uniform layer, looks like fog, drizzle is produced
Stratocumulus (Sc): layer or series of rounded masses or rolls, thin with blue sky breaks
Nimbostratus (Ns): uniform, dark grey, continuous rain or snow, ASSOCIATED with
WARM FRONTS - Answer-✅Explain low clouds.
/.Clouds of Vertical Development- Composed of water droplets that are sometimes
supercooled
Cumulus (Cu): dense cloud, thick, round, lumpy, cotton ball-like
Towering Cumulus (TCu): cumulus clouds that build up, likely to turn into cumulonimbus
Cumulonimbus (Cb): heavy masses of cumulus clouds, form an anvil shaped top -
Answer-✅Explain clouds of vertical development.
/.Clear: no clouds
Few: 2/8 or less
Scattered: 3 to 4 /8
Broken 5 to 7 /8
Overcast 8/8 - Answer-✅Explain the oktas that the metal reports cloud conditions.
/.Air that blows against a range of hills or mountains that causes it to be forced upwards,
reaching a region of lower pressure, expanding and cooling. - Answer-✅What is
orographic lift?
/.Warm air rising due to heating of the ground by the sun, rising currents of air occur.
This is known as convection. The downward movement of air is known as subsidence. -
Answer-✅What is convection?
/.When a mass of warm air advances on a colder mass. Warm air rises over the cool air
on a long slope, - Answer-✅What is frontal lift
/.29.92" of Mercury or 1013.2 hectopascals - Answer-✅What is standard pressure in
inches of mercury and hectopascal?
