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Question 58-1 : On the ground an altimeter set to the local pressure indicates ? [ Course specific ]

A height equals to 0 ft

Question 58-2 : Aviation weather reports a metar describes the weather ?

Observed at a station at the time of the report.

Question 58-3 : Surface based layers advection fog forms when ?

Moist air moves from a warm surface to a colder surface.

Question 58-4 : What is the most abundant gas in earth's atmosphere ?

Nitro.

Question 58-5 : In the troposphere where most of our rpas fly the icao average decrease in temperature per 1000 ft is ?

198°c.

exemple 74: 198°c
5°c. 0.65°c. 0.2°c.

Question 58-6 : During the life cycle of a thunderstorm which stage is characterized predominantly by downdrafts at the cloud base ?

Dissipating stage.

exemple 78: Dissipating stage
Cumulus stage. mature stage. tornado stage.

Question 58-7 : In the lower layers of the atmosphere we can consider that the average pressure decrease with altitude is ?

1 hpa per 28 ft.

exemple 82: 1 hpa per 28 ft
6.5 hpa per 28 ft. 1 hpa per 1000 ft. 1 hpa per 100 m.

Question 58-8 : In a cumulonimbus cloud descending air currents can reach a speed of ?

2000 ftmin.

exemple 86: 2000 ftmin
100 ft/min. 300 ft/min. 500 ft/min.

Question 58-9 : By day a sea breeze will ?

Be onshore due to the pressure drop on land.

exemple 90: Be onshore due to the pressure drop on land
Be onshore due to the pressure increase on land. be offshore due to the oceanic lift. be offshore due to the oceanic sink.

Question 58-10 : Roll clouds or rotors are likely to be experienced ?

Along the leeward side of a mountain range.

exemple 94: Along the leeward side of a mountain range
On the ridge of a mountain range. along the windward side of a mountain range. in the ascendant area of a mountain range.

Question 58-11 : Regarding the different gases constituting the atmosphere ?

Their proportions remain the same for all altitudes accessible to light aircraft.

exemple 98: Their proportions remain the same for all altitudes accessible to light aircraft
Their proportions increase with altitude. oxygen is concentrated in the lower layers, nitrogen occupies the upper layers. their proportions decrease with altitude.

Question 58-12 : During summer on arriving to the specified area for your flight you observe fog and sunlight slashes through the fog ?

The flight is possible at the end of the morning.

exemple 102: The flight is possible at the end of the morning
You will be able to take off in 30 minutes. you can take off in the afternoon. the flight is not possible today, you postpone the flight for the next day.

Question 58-13 : During summer weather associated to a high pressure system is characterized by ?

Clear nights sunny days without cloud or with small cumulus.

exemple 106: Clear nights sunny days without cloud or with small cumulus
Many foggy days and continuous rains during nights. clear nights with fair weather cumulus clouds, days without cloud or advection fogs. continuous rainy days and foggy nights.

Question 58-14 : Without wind what would be the position of a wind indicator on an aerodrome ?

Completely vertical.

exemple 110: Completely vertical
5 degrees below the horizon. 30 degrees below the horizon. 60 degrees below the horizon.

Question 58-15 : In meteorology a low pressure area is called ?

A low.




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