The barometric altimeter indicates height above... a selected reference pressure level. mean sea level. standard pressure 1013.25 hPa. ground.
The altimeter can be checked on the ground by setting... QFE and comparing the indication with the airfield elevation. QNH and comparing the indication with the airfield elevation. QNE and checking that the indication shows zero on the ground. QFF and comparing the indication with the airfield elevation.
The barometric altimeter with QFE setting indicates... height above the pressure level at airfield elevation. true altitude above MSL. height above MSL. height above standard pressure 1013.25 hPa.
The barometric altimeter with QNH setting indicates... height above standard pressure 1013.25 hPa. height above the pressure level at airfield elevation. true altitude above MSL. height above MSL.
Given the following information, what is the true altitude?
(rounded to the nearest 50 ft)
QNH: 983 hPa
Altitude: FL 85
Outside Air Temperature: ISA - 10° 7900 ft 9400 ft 7300 ft 7600 ft.
How can wind speed and wind direction be derived from surface weather charts? By alignment and distance of isobaric lines By alignment and distance of hypsometric lines By alignment of lines of warm- and cold fronts. By annotations from the text part of the chart.
Which force causes "wind"? Centrifugal force Thermal force Coriolis force Pressure gradient force.
Above the friction layer, with a prevailing pressure gradient, the wind direction is... perpendicular to the isohypses. at an angle of 30° to the isobars towards low pressure. parallel to the isobars. perpendicular to the isobars.
Which of the stated surfaces will reduce the wind speed most due to ground friction? Flat land, deserted land, no vegetation Oceanic areas Mountainous areas, vegetation cover Flat land, lots of vegetation cover.
The movement of air flowing together is called... convergence. divergence. soncordence. subsidence.
The movement of air flowing apart is called... convergence. concordence. divergence. subsidence.
What weather development will result from convergence at ground level? Descending air and cloud formation Ascending air and cloud dissipation Descending air and cloud dissipation Ascending air and cloud formation.
When air masses meet each other head on, how is this referred to and what air movements will follow? Convergence resulting in sinking air Divergence resulting in sinking air Convergence resulting in air being lifted Divergence resulting in air being lifted.
What are the air masses that Central Europe is mainly influenced by? Arctic and polar cold air Polar cold air and tropical warm air Equatorial and tropical warm air Tropical and arctic cold air.
With regard to global circulation within the atmosphere, where does polar cold air meets subtropical warm air? At the equator At the geographic poles At the subtropical high pressure belt At the polar front.
Winds blowing uphill are defined as... katabatic winds. anabatic winds. convergent winds. subsident winds.
Winds blowing downhill are defined as... anabatic winds. katabatic winds. convergent winds.
subsident winds.
Air descending behind a mountain range is defined as... katabatic wind. convergent wind. anabatic wind. divergent wind.
"Foehn" conditions usually develop with... instability, widespread air blown against a mountain ridge. stability, widespread air blown against a mountain ridge. instability, high pressure area with calm wind. stability, high pressure area with calm wind.
What type of turbulence is typically found close to the ground on the lee side during Foehn conditions? Inversion turbulence Turbulence in rotors Clear-air turbulence (CAT)
Thermal turbulence
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