050.01 The Atmosphere Flashcards
The inversion in the lower troposhere created by old high pressure system during day or night is called (…) inversion.
The inversion in the lower troposhere created by old high pressure system during day or night is called (subsidence) inversion.
The amount of the sun’s heat absorbed by the Earth depends on the sun’s (solar strenght/elevation) and duration of the insolation.
The amount of the sun’s heat absorbed by the Earth depends on the sun’s (elevation) and duration of the insolation.
Contour heights are (indicated/true) heights (AGL/1013.25 mb/AMSL).
Contour heights are (true) heights (AMSL).
An aera on a synoptic chart appearing as a V-shaped extension of a low pressure area is called a (…).
An aera on a synoptic chart appearing as a V-shaped extension of a low pressure area is called a (trough).
Station pressure used in surface weather charts is (QNH/QFF/QFE/QNE).
Station pressure used in surface weather charts is (QFF).
At an altitude of 25 000 ft, the heigth interval corresponding to 1 hPa decrease in pressure is approximately (…) ft.
At an altitude of 25 000 ft, the heigth interval corresponding to 1 hPa decrease in pressure is approximately (60) ft.
Horizontal motion of air is called (…).
Horizontal motion of air is called (advection).
A high pressure that is weakening with altitude and turns into a low is called (cold/warm) (low/high).
A high pressure that is weakening with altitude and turns into a low is called (cold) (high).
If air temperature is higher than ISA, QFF is (higher/lower) than QNH. Vice versa below sea level.
If air temperature is higher than ISA, QFF is (lower) than QNH. Vice versa below sea level.
The mean height of the tropical zero degree isotherm is (12 000/14 000/16 000/19 000) ft.
The mean height of the tropical zero degree isotherm is (16 000) ft.
In general, if the air mass temperature is higher than ISA, the pressure at any given height will be (high/low) and the tropopause will be (high/low).
In general, if the air mass temperature is higher than ISA, the pressure at any given height will be (high) and the tropopause will be (high).
A pressure altimeter indicates the distance between two isobaric surfaces in the (actual/standard) atmosphere.
A pressure altimeter indicates the distance between two isobaric surfaces in the (standard) atmosphere.
The heat of the Earth is transferred upwards and leaves the atmosphere predominantly by (conduction/radiation/convection).
The heat of the Earth is transferred upwards and leaves the atmosphere predominantly by (radiation).
Insolation is maximum at (…).
Insolation is maximum at (local noon).
One of the reasons why land surfaces heat and cool more quickly than water is because water has a (higher/lower) specific heat than land.
One of the reasons why land surfaces heat and cool more quickly than water is because water has a (higher) specific heat than land.
The main constituents of the atmosphere are Nitrogen, Oxygen, Carbon Dioxide and (Ozone/Argon).
The main constituents of the atmosphere are Nitrogen, Oxygen, Carbon Dioxide and (Argon).
An aera on a synoptic chart appearing as a V-shaped extension of a high pressure area is called a (…).
An aera on a synoptic chart appearing as a V-shaped extension of a high pressure area is called a (ridge).
The mean height of the tropical tropopause is (44 000/49 000/54 000/59 000) ft.
The mean height of the tropical tropopause is (54 000) ft.
In winter, after breaking through a low level inversion during descent and assuming the pilot does not intervene, thrust most likely will (increase/decrease) and visibility is likely to (improve/deteriorate).
In winter, after breaking through a low level inversion during descent and assuming the pilot does not intervene, thrust most likely will (increase) and visibility is likely to (deteriorate).
A rising parcel of air which has no heat entering or leaving it will (reduce in/maintain) pressure, (increase/decrease) in density and (increase/decrease) in volume.
A rising parcel of air which has no heat entering or leaving it will (reduce in) pressure, (decrease) in density and (increase) in volume.
The majority of the Ozone is contained within the (tropo/strato/meso/iono)sphere.
The majority of the Ozone is contained within the (strato)sphere.
Downward vertical motion of air is called (…).
Downward vertical motion of air is called (subsidence).
The rate of pressure decrease with height is (lower/greater) in cold air than in warm air.
The rate of pressure decrease with height is (greater) in cold air than in warm air.
Formula to calculate tropopause height at a certain latitude
Average height of tropopause in km = 16 • cos(latitude)
The most effective way of heating the troposphere is (incoming/outgoing) (short/long)-wave radiation from the (Earth/Sun).
The most effective way of heating the troposphere is (outgoing) (long)-wave radiation from the (Earth).
Upward vertical motion of air is called (…).
Upward vertical motion of air is called (convection).
