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ATPL THEORY - METEOROLOGY (1)

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Quiz on ATPL THEORY - METEOROLOGY (1), created by mathys1995 on 18/08/2015.
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Quiz by mathys1995, updated more than 1 year ago
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Created by mathys1995 over 9 years ago
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Question 1

Question
Which one of the following statements applies to the tropopause?
Answer
  • It is, by definition, an isothermal layer.
  • It indicates a strong temperature lapse rate.
  • It is, by definition, a temperature inversion.
  • It separates the troposphere from the stratosphere.

Question 2

Question
At a certain position, the temperature on the 300 hPa chart is -48°C; according to the tropopause chart, the tropopause is at FL330. What is the most likely temperature at FL350?
Answer
  • -54°C
  • -50°C
  • -56.5°C
  • -58°C

Question 3

Question
The tropopause is lower...
Answer
  • south of the equator than north of it.
  • over the equator than over the South Pole.
  • over the North Pole than over the equator.
  • in summer than winter in moderate latitudes.

Question 4

Question
What is the most likely temperature at the tropical tropopause?
Answer
  • -55°C
  • -35°C
  • -25°C
  • -75°C

Question 5

Question
Which statement is correct regarding the International Standard Atmosphere?
Answer
  • At MSL temperature is 15°C and the decrease in temperature with height is 1°C per 100m.
  • At MSL temperature is 10°C and the decrease in temperature with height is 1°C per 100m.
  • At MSL pressure is 1013.25 hPa and the decrease of temperature with height is 1°C per 100m.
  • At MSL temperature is 15°C and pressure is 1013.25hPa.

Question 6

Question
The tropopause is a level at which...
Answer
  • water vapour content is greatest.
  • pressure remains constant.
  • vertical currents are strongest.
  • temperature ceases to fall with increasing height.

Question 7

Question
The 0°C isotherm is forecast to be at FL050. At what FL would you expect a temperature of -6°C?
Answer
  • FL080
  • FL020
  • FL100
  • FL110

Question 8

Question
How does temperature vary with increasing altitude in the ICAO standard atmosphere below the tropopause?
Answer
  • It increases.
  • At first it increases and higher up it decreases.
  • It remains constant.
  • It decreases.

Question 9

Question
Which is true of the temperature at the tropopause?
Answer
  • It is higher in polar regions than in equatorial regions.
  • It is higher in equatorial regions than in polar regions.
  • It is highest in middle latitudes.
  • There is no significant difference with change of latitude.

Question 10

Question
What is the boundary layer between troposphere and stratosphere called?
Answer
  • Tropopause
  • Ionosphere
  • Stratosphere
  • Atmosphere

Question 11

Question
How would you characterise an air temperature of -15°C at the 700hPa level over Western Europe?
Answer
  • Low
  • High
  • Within +/-5°C of ISA
  • 20°C below standard

Question 12

Question
The temperature at FL110 is -5°C. What will the temperature be at FL050 if the ICAO standard lapse rate is applied?
Answer
  • +3°C
  • 0°C
  • -3°C
  • +7°C

Question 13

Question
How does the height of the tropopause normally vary with latitude in the northern hemisphere?
Answer
  • It remains constant throughout the year.
  • It decreases from south to north.
  • It remains constant from north to south.
  • It increases from south to north.

Question 14

Question
The temperature at FL080 is +6°C. What will the temperature be at FL130 if the ICAO standard lapse rate is applied?
Answer
  • +2°C
  • -4°C
  • -6°C
  • 0°C

Question 15

Question
What is the lowest assumed temperature in the ICAO Standard Atmosphere?
Answer
  • -273°C
  • -44.7°C
  • -100°C
  • -56.5°C

Question 16

Question
The troposphere is the...
Answer
  • part of the atmosphere below the tropopause.
  • part of the atmosphere above the stratosphere.
  • boundary between the mesosphere and thermosphere.
  • boundary between the stratosphere and the mesosphere.

Question 17

Question
How would you characterise an air temperature of -55°C at the 200hPa level over Western Europe?
Answer
  • Within +/-5°C of ISA
  • High
  • Low
  • Very high

Question 18

Question
The height and the temperature of the tropopause are respectively in the order of...
Answer
  • 8 km and -40°C over the equator.
  • 8 km and - 75°C over the poles.
  • 16 km and -40°C over the poles.
  • 16 km and -75°C over the equator.

Question 19

Question
What of the following is the most important constituent in the atmosphere from a weather stand-point?
Answer
  • Nitrogen
  • Oxygen
  • Hydrogen
  • Water vapour

Question 20

Question
What is the vertical temperature lapse rate, up to 11km, in the ICAO standard atmosphere?
Answer
  • 6.5°C per 1000m
  • 4.5°C per 1000m
  • 3°C per 1000m
  • 2°C per 1000m

Question 21

Question
An outside air temperature of -35°C is measured while cruising at FL200. What is the temperature deviation from the ISA at this level?
Answer
  • 10°C warmer than ISA
  • 5°C warmer than ISA
  • 5°C colder than ISA
  • 10°C colder than ISA

Question 22

Question
How would you characterise an air temperature of -30°C at the 300hPa level over Western Europe?
Answer
  • Within +/-5°C of ISA
  • Low
  • Very low
  • High

Question 23

Question
What is the rate of decrease of temperature with height per 100m in the International Standard Atmosphere?
Answer
  • 0.65°C
  • 1°C
  • 0.5°C
  • Variable

Question 24

Question
What is the approximate composition of the dry air by volume in the troposphere?
Answer
  • 50% oxygen, 40% nitrogen, and the rest other gasses
  • 21% oxygen, 78% nitrogen, and the rest other gasses
  • 10% oxygen, 89% nitrogen, and the rest other gasses
  • 88% oxygen, 9% nitrogen, and the rest other gasses

Question 25

Question
If you are flying at FL300 in an air mass that is 15°C warmer than a standard atmosphere, what is the outside temperature likely to be?
Answer
  • -15°C
  • -30°C
  • -45°C
  • -60°C

Question 26

Question
A temperature of +15°C is recorded at an altitude of 500m above sea level. If the vertical temperature gradient is that of a standard atmosphere, what will the temperature be at the summit of a mountain, 2500m above sea level?
Answer
  • +4°C
  • 0°C
  • -2°C
  • +2°C

Question 27

Question
The temperature at FL140 is -12°C. What will the temperature be at FL110 if the ICAO standard lapse rate is applied?
Answer
  • -15°C
  • -6°C
  • -18°C
  • -9°C

Question 28

Question
If you are flying at FL120 and the outside temperature is -2°C, at what altitude will the "freezing level" be?
Answer
  • FL150
  • FL090
  • FL110
  • FL130

Question 29

Question
The troposphere...
Answer
  • reaches the same height at all latitudes.
  • has a greater vertical extent above the equator than above the poles.
  • contains all oxygen of the stratosphere.
  • is the separation layer between the stratosphere and atmosphere.

Question 30

Question
The thickness of the troposphere varies with...
Answer
  • rotation of the Earth.
  • the wind.
  • latitude.
  • longitude.

Question 31

Question
What, approximately, is the average height of the tropopause over the equator?
Answer
  • 16km
  • 8km
  • 11km
  • 40km

Question 32

Question
Going from the equator to the North Pole, the altitude of the tropopause...
Answer
  • decreases and its temperature increases.
  • increases and its temperature increases.
  • increases and its temperature decreases.
  • decreases and its temperature decreases.

Question 33

Question
What is the temperature at 10,000ft in the International Standard Atmosphere?
Answer
  • -20°C
  • -35°C
  • -5°C
  • 0°C

Question 34

Question
What, approximately, is the average height of the tropopause at 50°N?
Answer
  • 14km
  • 16km
  • 11km
  • 8km

Question 35

Question
In the lower part of the stratosphere, the temperature...
Answer
  • increases with altitude.
  • increases at first and decreases afterward.
  • is almost constant.
  • decreases with altitude.

Question 36

Question
Which layer of the atmosphere contains more than 90% of all water vapour?
Answer
  • Troposphere
  • Lower stratosphere
  • Upper stratosphere
  • Ionosphere

Question 37

Question
In the mid-latitudes the stratosphere extends on an average from...
Answer
  • 85 to more than 200km.
  • 11 to 50km.
  • 0 to 11km.
  • 50 to 85km.
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