Met

Question 1

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?

Answer 1

Orographic fog

Question 2

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?

Answer 2

Embedded CB with showers

Question 3

What is the mass of a “cube of air” with the edges 1 m long, at MSL according ISA?

Answer 3

1,225 kg

Question 4

Which process may result in an inversion layer at about 5000 ft (1500 m) height?

Answer 4

Descending air in a high pressure area

Question 5

What information is required to convert a minimum safe altitude into a lowest usable flight
level?

Answer 5

Lowest value of QNH and the lowest negative temperature deviation from ISA

Question 6

A parcel of moist but not saturated air rises due to adiabatic effects. Which of the following
changes?

Answer 6

RElative humidity

Question 7

Clouds, fog and dew will always be formed when:

Answer 7

Water vapor condenses

Question 8

in TAF or METAR cloud level is given as highest…

Answer 8

The highest above aerodrome

Question 9

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?

Answer 9

Less than 1000 ft

Question 10

The wind that flows down mountain slopes at night as a result of cooling is
called:

Answer 10

Katabatic wind

Question 11

The wind that flows up mountain slopes during the day caused by heating is

Answer 11

Anabatic wind

Question 12

A flight at low level (below 3,000ft above ground level) in strong winds is
likely to:

Answer 12

Experience more frequent and sever turbulence over the land than
over the sea.

Question 13

Cloud formed by convection that have a ‘lumpy’ to ‘heaped’ appearance
belong to:

Answer 13

Cumuliform

Question 14

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?

Answer 14

3000 ft

Question 15

Precipitation consisting of branded and star-shaped ice crystals which can
cause engine intake icing is called:

Answer 15

Snow

Question 16

Rain which falls from the base of colds but evaporates before reading the
ground is called:

Answer 16

Virga

Question 17

Small liquid droplets suspended in the air:

Answer 17

Decrease visibility as it scatters away from the pilot

Question 18

A warm, maritime airflow over a relative colder land surface may give rise
to:

Answer 18

Advection Fog, mist and stratus

Question 19

Area Report (METAR) and Terminal Aerodrome Forecast (TAF0 both
incorporate ‘6000 HZ’ which means:

Answer 19

6000 meters horizontal visibility in haze

Question 20

The visibility group ‘R35/0400’ in Meteorological Area Report (METAR)
means:

Answer 20

Runway 35, Visual range 400

Question 21

A tropical air mass that has originated over the ocean is referred to as:

Answer 21

Tropical maritime

Question 22

A cool, polar air mass moves across warmer land surface:

Answer 22

Heat transfers to the air mass from the surface and it becomes more
unstable.

Question 23

A high pressure weather system is associated with:

Answer 23

Descending heating and drying air. Being more stable. Results in a temperature inversion

Question 24

A warm air mass replacing a cold air mass is called a

Answer 24

Warm front

Question 25

A cold air mass replacing a warm air mass is called a:

Answer 25

Cold front

Question 26

The general cloud associated with a warm front is:

Answer 26

Stratiform clouds

Question 27

For a normally aspirated, piston engine throttle icing more likely at:

Answer 27

Lower power setting

Question 28

The time currently 0600Z. The estimated time of departure for a planned route is 1300Z. What meteorological product should be used for best planning for weather enroute:

Answer 28

Area forecast covering the route valid 0800Z to 1700Z. Terminal Aerodrome Forecasts (TAFs) valid 0900Z t 1800Z for departure, destination and diversion airfields.

Question 29

. In TAFs and METARs, the cloud base is given as:

Answer 29

Above the aerodrome

Question 30

In a Meteorological Aerodrome Report (METAR) or Terminal Aerodrome Forecast (TAF) '9999' means:

Answer 30

Visibility in excess of 10 kilometres.

Question 31

A METAR finishes off 'Q1014 NOSIG='. What does the Q1014 mean?

Answer 31

There is a QNH of 1014 hectopascals at the airfield.

Question 32

Most of the water vapour in the atmosphere is contained in the:

Answer 32

Troposphere

Question 33

As altitude increases, atmospheric pressure:

Answer 33

Decreases

Question 34

Aircraft measure static atmospheric pressure using:

Answer 34

Aneroid Barometer

Question 35

A line on a map joining places of equal sea level pressure is called:

Answer 35

Isobar

Question 36

The variation of pressure with horizontal distance is called:

Answer 36

Pressure gradient

Question 37

The transfer of heat as electromagnetic waves is called the process of:

Answer 37

Radiation

Question 38

The transfer of heat from body to body is called the process of:

Answer 38

Conduction

Question 39

The transfer of heat by the horizontal motion of an air mass is called:

Answer 39

Advection

Question 40

The transfer of heat by the vertical motion of an air mass is called:

Answer 40

Convection

Question 41

it is winter and an aircraft is flying in the warm sector of a depression. There are mountains upwind. In theory, what condition can be expected?

Answer 41

Widespread low clouds, strong wind extensive hill fog n the windward site of mountains.

Question 42

The troposphere is mostly heated:

Answer 42

By the earths surface with convection and re readiation

Question 43

Solar heating of the earth’s surface is:

Answer 43

Greatest at the tropics

Question 44

At a given latitude and longitude, solar heating of the sea:

Answer 44

Is less rapid than land because water has a greater heat capacity.

Question 45

A day with clear skies compared to one with overcast cloud will result in (assuming the same air mass):

Answer 45

A warmer day and colder night

Question 46

If the air at the earth’s surface is cooler than that above there isa:

Answer 46

Temperature inversion

Question 46

Reports of wind at an airfield passed to a pilot from its Air Traffic Control (tower frequency) are relative to:

Answer 46

Magnetic north at the airfield

Question 47

A wind whose direction has changed in a CLOCKWISE direction (from 280° magnetic to 340° magnetic) has:

Answer 47

Veered

Question 48

A wind whose direction has changed in an ANTI CLOCKWISE (from 100° true to 50° true) direction has:

Answer 48

Has backed

Question 48

When a ‘parcel’ of air begins to move from high to low pressure, an ‘apparent’ or ‘inertial’ force begins to act on it which is:

Answer 48

The coriolis force, which acts perpendicular to the direction of motion

Question 49

The coriolis force is proportional to:

Answer 49

Wind speed

Question 50

The wind that flows around curved isobars is called the:

Answer 50

The gradient wind

Question 51

At an airfield the surface wind is measured at:

Answer 51

10 meters above ground level

Question 52

Over land, under a constant pressure gradient and clear skies; the surface wind speed by day is generally:

Answer 52

Greater during the day than at night