050.01 The Atmosphere

Question 1

The inversion in the lower troposhere created by old high pressure system during day or night is called (…)​ inversion.

Answer 1

The inversion in the lower troposhere created by old high pressure system during day or night is called (subsidence) inversion.

Question 2

The amount of the sun’s heat absorbed by the Earth depends on the sun’s (solar strenght/elevation)​ and duration of the insolation.

Answer 2

The amount of the sun’s heat absorbed by the Earth depends on the sun’s (elevation) and duration of the insolation.

Question 3

Contour heights are (indicated/true) heights (AGL/1013.25 mb/AMSL)​.

Answer 3

Contour heights are (true) heights (AMSL).

Question 4

An aera on a synoptic chart appearing as a V-shaped extension of a low pressure area is called a (…)​.

Answer 4

An aera on a synoptic chart appearing as a V-shaped extension of a low pressure area is called a (trough).

Question 5

Station pressure used in surface weather charts is (QNH/QFF/QFE/QNE)​.

Answer 5

Station pressure used in surface weather charts is (QFF).

Question 6

At an altitude of 25 000 ft, the heigth interval corresponding to 1 hPa decrease in pressure is approximately (…)​ ft.

Answer 6

At an altitude of 25 000 ft, the heigth interval corresponding to 1 hPa decrease in pressure is approximately (60) ft.

Question 7

Horizontal motion of air is called (…)​.

Answer 7

Horizontal motion of air is called (advection).

Question 8

A high pressure that is weakening with altitude and turns into a low is called (cold/warm) (low/high)​.

Answer 8

A high pressure that is weakening with altitude and turns into a low is called (cold) (high).

Question 9

If air temperature is higher than ISA, QFF is (higher/lower) than QNH. Vice versa below sea level.

Answer 9

If air temperature is higher than ISA, QFF is (lower) than QNH. Vice versa below sea level.

Question 10

The mean height of the tropical zero degree isotherm is (12 000/14 000/16 000/19 000)​ ft.

Answer 10

The mean height of the tropical zero degree isotherm is (16 000) ft.

Question 11

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)​.

Answer 11

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).

Question 12

A pressure altimeter indicates the distance between two isobaric surfaces in the (actual/standard)​ atmosphere.

Answer 12

A pressure altimeter indicates the distance between two isobaric surfaces in the (standard) atmosphere.

Question 13

The heat of the Earth is transferred upwards and leaves the atmosphere predominantly by (conduction/radiation/convection)​.

Answer 13

The heat of the Earth is transferred upwards and leaves the atmosphere predominantly by (radiation).

Question 14

Insolation is maximum at (…)​.

Answer 14

Insolation is maximum at (local noon).

Question 15

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.

Answer 15

One of the reasons why land surfaces heat and cool more quickly than water is because water has a (higher) specific heat than land.

Question 16

The main constituents of the atmosphere are Nitrogen, Oxygen, Carbon Dioxide and (Ozone/Argon)​.

Answer 16

The main constituents of the atmosphere are Nitrogen, Oxygen, Carbon Dioxide and (Argon).

Question 17

An aera on a synoptic chart appearing as a V-shaped extension of a high pressure area is called a (…)​.

Answer 17

An aera on a synoptic chart appearing as a V-shaped extension of a high pressure area is called a (ridge).

Question 18

The mean height of the tropical tropopause is (44 000/49 000/54 000/59 000)​ ft.

Answer 18

The mean height of the tropical tropopause is (54 000) ft.

Question 19

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)​.

Answer 19

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).

Question 20

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.

Answer 20

A rising parcel of air which has no heat entering or leaving it will (reduce in) pressure, (decrease) in density and (increase) in volume.

Question 21

The majority of the Ozone is contained within the (tropo/strato/meso/iono)​sphere.

Answer 21

The majority of the Ozone is contained within the (strato)sphere.

Question 22

Downward vertical motion of air is called (…)​.

Answer 22

Downward vertical motion of air is called (subsidence).

Question 23

The rate of pressure decrease with height is (lower/greater)​ in cold air than in warm air.

Answer 23

The rate of pressure decrease with height is (greater) in cold air than in warm air.

Question 24

Formula to calculate tropopause height at a certain latitude

Answer 24

Average height of tropopause in km = 16 • cos(latitude)

Question 25

The most effective way of heating the troposphere is (incoming/outgoing) (short/long)-wave radiation from the (Earth/Sun)​.

Answer 25

The most effective way of heating the troposphere is (outgoing) (long)-wave radiation from the (Earth).

Question 26

Upward vertical motion of air is called (…)​.

Answer 26

Upward vertical motion of air is called (convection).