Met Flashcards
What type of fog emerges if humid and almost saturated air, is forced to rise upslope
of hills or shallow mountains by the prevailling wind?
Orographic fog
What clouds and weather may result from an humid and instable air mass, that is
pushed against a chain of mountains by the predominant wind and forced to rise?
Embedded CB with showers
What is the mass of a “cube of air” with the edges 1 m long, at MSL according ISA?
1,225 kg
Which process may result in an inversion layer at about 5000 ft (1500 m) height?
Descending air in a high pressure area
What information is required to convert a minimum safe altitude into a lowest usable flight
level?
Lowest value of QNH and the lowest negative temperature deviation from ISA
A parcel of moist but not saturated air rises due to adiabatic effects. Which of the following
changes?
RElative humidity
Clouds, fog and dew will always be formed when:
Water vapor condenses
in TAF or METAR cloud level is given as highest…
The highest above aerodrome
A vertical of 1000 ft is the standard required separation between two FL. Under conditions
of cold air advection (ISA – 15 degrees Celsius), what would the true vertical separation be?
Less than 1000 ft
The wind that flows down mountain slopes at night as a result of cooling is
called:
Katabatic wind
The wind that flows up mountain slopes during the day caused by heating is
Anabatic wind
A flight at low level (below 3,000ft above ground level) in strong winds is
likely to:
Experience more frequent and sever turbulence over the land than
over the sea.
Cloud formed by convection that have a ‘lumpy’ to ‘heaped’ appearance
belong to:
Cumuliform
Just considering that exchange, if the moisture content of a parcel of air is
such that its dewpoint temperature is +7°C, at what height above the
ground is the cloud base likely to form if the surface air temperature is
+16°C?
3000 ft
Precipitation consisting of branded and star-shaped ice crystals which can
cause engine intake icing is called:
Snow
Rain which falls from the base of colds but evaporates before reading the
ground is called:
Virga
Small liquid droplets suspended in the air:
Decrease visibility as it scatters away from the pilot
A warm, maritime airflow over a relative colder land surface may give rise
to:
Advection Fog, mist and stratus
Area Report (METAR) and Terminal Aerodrome Forecast (TAF0 both
incorporate ‘6000 HZ’ which means:
6000 meters horizontal visibility in haze
The visibility group ‘R35/0400’ in Meteorological Area Report (METAR)
means:
Runway 35, Visual range 400
A tropical air mass that has originated over the ocean is referred to as:
Tropical maritime