Meteorology

The atmosphere is divided into two regions, the upper one is called:
1. The stratosphere
2. The troposphere
3. The spectresphere
4. The heliopause
The atmosphere is divided into two regions. The dividing line between them is called:
1. The hemisphere
2. The tropopause
3. The stratosphere
4. The spectresphere
The region in which nearly all weather occurs is called:
1. The stratosphere
2. The tropopause
3. The troposphere
4. The hemisphere
Pressure:
1. Increases with altitude
2. Decreases with altitude
3. Remains constant with altitude
Pressure is measured in:
1. Grammes per cubic metre
2. Millibars
3. Hectopastilles
4. Knots
Lines joining places of equal atmospheric pressure are called:
1. Millibars
2. Isobars
3. Pressurebars
4. Lines of lattitude
A chart of lines joining places of equal atmospheric pressure is called:
1. An isochart
2. A baratic chart
3. A pressure map
4. A flight plan
An area of high pressure is called:
1. An anticyclone
2. A cyclone
3. A highclone
4. A traffic cone
A Col is:
1. An area of high pressure
2. An area between high and low pressures
3. An area of low pressure
4. An area of zero pressure
An aircraft altimeter is a _________ type of barometer.
1. Haemorrhoid
2. Aneroid
3. Mercury
4. Hyperbolic
1 millibar represents changes in altitude of:
1. 300 feet
2. 20 feet
3. 30 feet
4. 1000 feet
If you stand with your back to the wind where is the low pressure?
1. To your right
2. Ahead of you
3. To your left
Which gives the driest weather?
1. Low pressure
2. A Col
3. High pressure
High pressure is:
1. Rising air
2. Static air
3. Sinking air
4. Hot air
Density is defined as:
1. The mass of a given volume of air
2. The force per unit exerted by the weight of the atmosphere
3. The volume co-efficient
4. The temperature of the air at sea level
The prefix "nimbus" means:
1. Large
2. Black
3. Rain
4. Happy
The prefix "alto" means:
1. High level cloud
2. Medium size
3. Medium level cloud
4. Ground level cloud
A thunderstorm is:
1. A cumulus cloud
2. A nimbo stratus cloud
3. A cumulonimbus cloud
Pilots are advised to keep at least _____ miles from a thunderstorm cloud.
1. 5
2. 10
3. 20
4. 100
A Fohn wind:
1. Produces a cold wind on the lee side of the mountain
2. Produces a warm wind on the lee side of the mountain
3. Is a sea breeze effect
Lenticular clouds mark:
1. Severe turbulence
2. Cold front approaching
3. Mountain wave
Cold fronts produce mainly
1. Cumiloform clouds
2. Stratus clouds
3. Cirrus clouds
The first cloud of an approaching warm fronts is:
1. Cumulus
2. Stratus
3. Cirrus
The chart symbol of a cold symbol is a series of
1. Triangles
2. Squares
3. Semicircles
4. Asterisks
As a cold front passes:
1. Wind veers, temperature rises, dewpoint drops
2. Wind veers, temperature falls, dewpoint drops
3. Wind veers, pressure drops, temperature rises
At the passage of a cold front you would expect:
1. Severe turbulence
2. Low stratus and poor visibility
3. Smooth clear conditions
As a warm front passes:
1. Wind backs, temperature and dewpoint rise
2. Wind veers, temperature and dewpoint rise
3. Wind veers, temperature rises, dewpoint falls
At the passage of a warm front you would expect:
1. Severe turbulence
2. Low stratus and poor visibility
3. Smooth clear conditions
How far ahead of a warm front would you see the first associated clouds?
1. 50 miles
2. 500 miles
3. 200 miles
4. 2 miles
An occluded front is where:
1. The warm front catches up with the cold front
2. The frontal system as a whole stops moving
3. The cold front catches up with the warm front
4. The frontal system inverts itself and spends the rest of the day sulking about miserably
The symbol for an occluded front is:
1. triangles
2. triangles and squares
3. Triangles and semicircles
4. Dashes
The prime danger associated with occluded fronts is:
1. Strong winds
2. Embedded cumulonimbus clouds
3. Sudden poor visibility
4. A severe lack of interest to get any work done
A cold occlusion is where:
1. The cold front undercuts
2. The cold front rides up over the colder air behind the warm front
3. The occluding process occurs above 54 degrees latitude
Clear ice occurs when:
1. Large supercooled water droplets are present
2. Small supercooled water droplets are present
3. The airframe is cooled due to radiation at night
4. The sun comes out on a snowy day
Hoar frost is an example of:
1. Adiabatic cooling
2. Direct sublimation
3. Ice formed by freezing water droplets
Ice:
1. Should be removed completely before flight
2. Will decrease the minimum sustainable flying speed
3. May cause the aircraft structure to become brittle and fail as low as 2 G
Carburettor ice is formed
1. By the adiabatic temperature loss of air flowing through the venturi
2. By the adiabatic temperature loss of air flowing through the venturi and the evaporation temperature loss coupled with high humidity
3. When ever flying through cloud
4. Only when the temperature is felt to be cold enough to warrant wearing a sweater or jacket, regardless of humidity levels
(Choose the best answer)
The temperature range within which carburettor ice is possible is:
1. -10 to +15 deg C
2. At any time if the temperature is below 10 deg C
3. -6 to +25 (or even higher) degrees C
Carburettor ice is most likely if air temperature and dewpoint temperature are respectively:
1. -10 and -20 deg C
2. +20 and 0 deg C
3. +12 and +10 deg C
4. +36 and +17 deg C
Carburettor ice is most likely:
1. At higher throttle openings
2. At medium throttle openings
3. At small throttle openings
4. At full throttle openings
When approaching to land which visibility is most important to a pilot?
1. Vertical
2. Horizontal
3. Slant
If flying on a hazy afternoon in Britain, in which direction will visibility be greatest?
1. Looking west
2. Looking north
3. Looking east
If warm moist air flows off the sea onto cold land, what may form?
1. Sea fog
2. Advection fog
3. Radiation fog
What may form on a cool cloudless night with no wind, and the very moist air in contact with the surface is cooled below dew point?
1. Dew
2. Radiation fog
3. Mist
4. Snow
What may form on a cool cloudless night with a light wind, and the very moist air in contact with the surface is cooled below dew point?
1. Dew
2. Radiation fog
3. Mist
4. Snow
Mist is said to exist if:
1. The visibility is less than 1km
2. The visibility is between 2 and 3 km
3. The visibility is between 1 and 2 km
4. The visibility is between 5 and 8 km
Fog that forms from the interaction of two airmasses is called:
1. Advection fog
2. Frontal fog
3. Radiation fog
For smog to form:
1. An inversion is normally required
2. A low pressure system is required
3. High temperatures are required
4. Freezing temeperatures are required
A tropical maritime airstream will produce:
1. Stable conditions with layer cloud
2. Violent showers
3. A high ELR
4. A low ELR
A polar maritime airstream will produce:
1. Stable conditions with layer cloud
2. Violent showers
3. A high ELR
4. A low ELR
A polar continental airstream:
1. Will have a high ELR
2. Will have a low ELR
3. Will produce stratus cloud
In the summer a polar continental airstream will produce:
1. Hot and hazy weather
2. Coll weather with stratus clouds
3. Cool weather with clear skies
The typical slope of a cold front is:
1. 1 in 10
2. 1 in 50
3. 1 in 150
4. 1 in 1000
The minimum visibility for CAVOK is:
1. 10km
2. 15km
3. 20km
4. 55km
A METAR is a weather:
1. Forecast
2. Report
3. Warning
4. Map
What does TAF stand for?
1. Terrible aerodrome forecast
2. Terminal aerodrome forecast
3. Threat against flight
4. Turbulent Air Front
Airmet information is available through:
1. Post
2. Radio
3. Public telephone network
Volmet is available through:
1. Post
2. Radio
3. Telephone
4. Carrier pigeon
The abbreviation XXRASH means:
1. Heavy rain showers
2. Rain showers drying out
3. Warning severe met danger of crash
4. A skin rash of an erotic nature
A 4 octa cloud forecast may be indicated by the letters:
1. BKN
2. SCT
3. SKC
4. FCF
CAT stands for:
1. Central aerodrome taxiway
2. Cloud above takeoff
3. Clear air turbulence
4. Clouds after thunderstorm
The abbreviation SC stands for:
1. Stratocumulus
2. Shortly clearing
3. Showers on the coast
4. Snow clouds
Compared to the surface, the 2000 foot wind:
1. Will veer and decrease in strength
2. Will back and decrease in strength
3. Will veer and increase in strength
4. Will back and increase in strength
On average the direction of the surface wind compared to the 2000 foot wind will change by:
1. 10 degrees
2. 15 degrees
3. 30 degrees
4. 180 degrees
A wind whose direction has changed clockwise is said to have:
1. Backed
2. Veered
3. Geostrophicated
4. Kicked the bucket
If flying a long cross country with the wind from the right:
1. You are flying towards a high pressure and your altimeter will under read
2. You are flying parallel to the isobars and there will be no significant altimeter change
3. You are flying towards a low pressure and your altimeter will over read
Which of the following sayings is correct:
1. If God had meant us to fly He would have given us feathers!
2. Slow rise after low foretells a stronger blow
3. From high to low beware below
Horizontal transfer of heat is called:
1. Convection
2. Advection
3. Radiation
4. Conduction
The lower levels of the atmosphere are heated:
1. Directly by the sun
2. By advection only
3. By radiation from the earth's surface
4. By nuclear power stations
The hot and low density band of low pressure at the tropics is called the:
1. Equatorial trough
2. Cyclonic ring
3. Anticyclonic band
4. Stifler's Mom
Air in a high pressure system is:
1. Diverging
2. Converging
3. Static
4. Going home for the day
The atmospheric situation where temperature increases with height is called a(n):
1. Occlusion
2. Inversion
3. Diversion
4. Illusion
When climbing through an inversion a pilot may experience:
1. Carburettor icing
2. A slight bump
3. Strong down drafts
4. Sudden inverted flight
Above an inversion:
1. Visibility will suddenly decrease
2. The air is turbulent
3. The wind direction and strength may be markedly different to that below
4. Is impossible to reach because inversions always reach up into the edge of the atmosphere, to the edge of space
Flying beneath cumulus clouds you may experience:
1. Strong winds
2. Up drafts
3. Smooth conditions
In the tropics the coriolis effect is weak and wind does not follow the isobars. To indicate wind direction on a chart, what are used?
1. Isotachs
2. Isoflows
3. Streamlines
Lines of equal wind speed are called:
1. isotachs
2. streamlines
3. flowbars
Virga means:
1. Newly formed wisps of cloud
2. Short burts of rain
3. Light rain that evaporates before reaching the ground
4. Hail that melts and turns into rain before reaching the ground
Roll or rotor cloud is associated with what other kind of cloud?
1. Cumulus
2. Lenticular wave cloud
3. Castellanus
4. Buzovski system
Wind gradient will be most pronounced
1. At night
2. During the day
3. During the day when thermal activity is at a peak
4. During late morning before the sun reaches its zenith
The atmosphere:
1. Is deeper at the poles than the equator
2. Is less deep at the poles than the equator
3. Is of even depth
In the southern hemisphere wind flows around the isobars with low pressure:
1. To the left
2. Ahead
3. To the right