RCAC Practice Exam (Meterology) V1
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Air CadetsPractice ExamMeterology
- 1.Relative humidity is the
- A.
Amount of moisture present in the air.
- B.
Weight of water present in the air.
- C.
Amount of moisture present in the air compared to the amount the air could hold at that temperature and pressure.
- D.
Temperature to which the air must be lowered to bring about saturation.
- 2.The cloud type usually associated with steady rain is
- A.
Altostratus.
- B.
Altocumulus.
- C.
Stratocumulus.
- D.
Nimbostratus.
- 3.Clouds form when moist warm air overruns cold air because the warm air
- A.
Is cooled by the cold air underneath.
- B.
Is cooled by the surrounding cold air aloft.
- C.
Becomes unstable as a result of cooling from below.
- D.
Cools as a result of expansion as it rises.
- 4.Advection fog forms when
- A.
Moist air moves from a warm surface to a colder surface.
- B.
The cold ground cools the air in contact with it at night
- C.
Moist air is influenced by orographic effect.
- D.
Moist cool air moves from a cold surface to a warm surface.
- 5.In the northern hemisphere, the winds blow
- A.
Clockwise around high and low pressure areas.
- B.
Counter-clockwise around high and low pressure areas.
- C.
Clockwise around a high pressure area and counter-clockwise around a low pressure area.
- D.
Counter-clockwise around a high pressure area and clockwise around a low pressure area.
- 6.During a descent from 2,000 feet AGL to the surface, you will usually find that the wind
- A.
Veers and increases.
- B.
Backs and increases.
- C.
Backs and decreases.
- D.
Veers and decreases.
- 7.The diurnal change of surface wind velocity is such that during the day the surface wind will usually
- A.
Veer and increase in speed.
- B.
Veer and decrease in speed.
- C.
Back and increase in speed.
- D.
Back and decrease in speed.
- 8.The conditions required for the formation of thunderstorms are
- A.
Moist air, high temperature, and an inversion.
- B.
Stratus cloud, high humidity and a lifting force.
- C.
Unstable air, high humidity and a lifting force.
- D.
A mixing of two different air masses.
- 9.A condition when the air temperature aloft is higher than that of the lower atmosphere is generally referred to as
- A.
A low pressure area.
- B.
An inversion.
- C.
A reverse temperature condition.
- D.
An inverse convection condition.
- 10.Air masses that are being cooled from below are characterized by
- A.
Strong winds, cumulus cloud, good visibility.
- B.
Uniform temperature, good visibility.
- C.
Continuous rain, freezing temperature.
- D.
Fog, poor visibility and layer cloud.
- 11.A front is a
- A.
Narrow zone of fog between a cyclone and an anticyclone.
- B.
Line of thunderstorms.
- C.
Narrow transition zone between two air masses.
- D.
Mass of layer cloud which is very thick and which covers a wide area.
- 12.During the passage of a cold front
- A.
Warm air is compressed as cold air rides over it.
- B.
Temperature rises owing to increased pressure.
- C.
Fog will always form from the interaction of warm and cold air.
- D.
Warm air is lifted as colder air pushes under it.
- 13.The following sequence of clouds is observed at an airport: cirrus, altostratus, nimbostratus. The observer should expect
- A.
The passage of a cold front.
- B.
Anticyclonic weather.
- C.
The passage of a warm front.
- D.
Clearing skies and a decrease in temperature.
- 14.Cloud heights in Canadian Aerodrome Forecasts (TAF) are given in
- A.
Feet AGL.
- B.
Feet ASL.
- C.
Metres AGL.
- D.
Metres ASL.
- 15.Failure to adjust the altimeter when flying from an area of low pressure to an area of higher pressure will result in the altimeter indicating
- A.
Too high.
- B.
Too low.
- C.
The pressure altitude.
- D.
The true altitude.
- 16.
![A METAR describes the weather - ProProfs]( "A METAR describes the weather")
A METAR describes the weather- A.
Expected at a station at a given time.
- B.
Expected at a station over a 12 hour period.
- C.
Observed at a station at the time of the report.
- D.
Observed at a station during the previous day.
- 17.METAR CYEG 070700Z 18005KT 4SM BR FEW 013 M05/M06 A3008 RMK SCI SLP224In this report, the visibility is;
- A.
4 miles.
- B.
13 miles.
- C.
5 miles.
- D.
6 miles.
- 18.METAR CYEG 070700Z 18005KT 4SM BR FEW 013 M05/M06 A3008 RMK SCI SLP224In this weather report, the wind speed reported at YEG is;
- A.
300 degrees at 8 kts.
- B.
070 degrees at 70 kts.
- C.
180 degrees at 5 kts.
- D.
050 degrees at 6 kts.
- 19.METAR CYEG 070700Z 18005KT 4SM BR FEW 013 M05/M06 A3008 RMK SCI SLP224 In this weather report, FEW 013 means;
- A.
3/8 to 5/8 of the sky covered in clouds height of the layer 13'.
- B.
5/8 to less than 8/8 of the sky covered in cloud, height of the layer is 13,000'
- C.
Sky Clear
- D.
Trace to 2/8 of the sky covered in cloud, height of the layer 1,300'
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