ATSC 113 Fly C Learning Checks Exam Questions with
complete Answers 2025/2026
Types of cumuliform clouds - correct answer small (cumulus humilis),
medium (cumulus mediocris), large (cumulus congestus), extra-large
(cumulonimbus/thunderstorms)
Characteristics of stratiform or layer clouds - correct answer associated
with atmospheric layers of different relative temperatures (happy cake)
Typical of warm fronts
See corona: bright circle with colourful fringes from the diffraction of
sunlight in water droplets of the cloud
Types of stratiform clouds - correct answer high (cirrus, cirrostratus, and
cirrocumulus), middle (altostratus, and altocumulus), low (stratus = well
defined cloud bases, and nimbostratus = diffused cloud bases &
precipitation)
Stratocumulus clouds - correct answer low layer of lumpy clouds;
characteristics of both cumuliform and stratiform clouds
Fog characteristics - correct answer cloud that touches ground with poor
visibility (less than 1 km); most likely during late night and early morning
Formed in 2 ways: 1) water added to unsaturated air, or 2) unsaturated air
cooled to dew-point temperature (point where water begins to condense)
+ wind = turbulence mixes cool humid air with warm dry air, which
dissipates fog
, + clear skies = ground radiates heat and becomes cold, if air cooled by
ground is humid and cooled enough becomes fog
+ cloud cover = clouds preventing ground cooling, prevents fog
Freezing fog - correct answer fog made of supercooled water droplets
Ice fog - correct answer fog made of tiny ice crystals
Valley fog forms when... - correct answer Cool, dense air flows downhill
and settles in a valley
Fog type - radiation - correct answer ground cools by infra-red radiation,
cooling the air above it
Fogs that form are shallow and gradually get thicker as night progresses
If fog becomes deep enough, IR cooling happens from fog top = fog
becomes hard to dissipate
Fog type - advection - correct answer humid air blown over colder surface
Forms a thick layer with sharp, defined front edges
Fog type - upslope - correct answer air pushed uphill cools adiabatically at
10°C/1km up
Appear as if the mountain top is in a cloud
Fog type - precipitation/frontal - correct answer formed by adding moisture
via evaporation from warm rain drops falling down into unsaturated cooler
air (rain into cooler clouds, waterfall droplets/spray)
Also creates fractus clouds
complete Answers 2025/2026
Types of cumuliform clouds - correct answer small (cumulus humilis),
medium (cumulus mediocris), large (cumulus congestus), extra-large
(cumulonimbus/thunderstorms)
Characteristics of stratiform or layer clouds - correct answer associated
with atmospheric layers of different relative temperatures (happy cake)
Typical of warm fronts
See corona: bright circle with colourful fringes from the diffraction of
sunlight in water droplets of the cloud
Types of stratiform clouds - correct answer high (cirrus, cirrostratus, and
cirrocumulus), middle (altostratus, and altocumulus), low (stratus = well
defined cloud bases, and nimbostratus = diffused cloud bases &
precipitation)
Stratocumulus clouds - correct answer low layer of lumpy clouds;
characteristics of both cumuliform and stratiform clouds
Fog characteristics - correct answer cloud that touches ground with poor
visibility (less than 1 km); most likely during late night and early morning
Formed in 2 ways: 1) water added to unsaturated air, or 2) unsaturated air
cooled to dew-point temperature (point where water begins to condense)
+ wind = turbulence mixes cool humid air with warm dry air, which
dissipates fog
, + clear skies = ground radiates heat and becomes cold, if air cooled by
ground is humid and cooled enough becomes fog
+ cloud cover = clouds preventing ground cooling, prevents fog
Freezing fog - correct answer fog made of supercooled water droplets
Ice fog - correct answer fog made of tiny ice crystals
Valley fog forms when... - correct answer Cool, dense air flows downhill
and settles in a valley
Fog type - radiation - correct answer ground cools by infra-red radiation,
cooling the air above it
Fogs that form are shallow and gradually get thicker as night progresses
If fog becomes deep enough, IR cooling happens from fog top = fog
becomes hard to dissipate
Fog type - advection - correct answer humid air blown over colder surface
Forms a thick layer with sharp, defined front edges
Fog type - upslope - correct answer air pushed uphill cools adiabatically at
10°C/1km up
Appear as if the mountain top is in a cloud
Fog type - precipitation/frontal - correct answer formed by adding moisture
via evaporation from warm rain drops falling down into unsaturated cooler
air (rain into cooler clouds, waterfall droplets/spray)
Also creates fractus clouds
