Question 1
Question
The international standard atmosphere assumes a lapse rate of
Answer
-
2ºC/1000 ft
-
1,5ºC/ 1000 ft
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3ºC/1000 ft
-
1,98ºC/1000 ft
Question 2
Question
The tropopause is:
Answer
-
The line where the temperature no longer decreases with increase of
height.
-
The layer between the tropopause and the stratosphere
-
The layer beyond which only CI cloud occurs.
-
The line indicating clear air turbulence
Question 3
Question
One of the most important characteristics of the atmosphere is:
Answer
-
Density is constant above 10000 ft
-
The air is a poor conductor of heat
-
Temperature lapse rate is very frequently above 3ºC per 1000 ft.
-
The air is a good conductor of heat
Question 4
Question
Most of the vapour in the atmosphere is contained in the:
Answer
-
tropopause
-
stratosphere
-
troposphere
-
stratopause
Question 5
Question
The captain of an aircraft needs to know the height of the tropopause because:
Answer
-
it normally represents the limit of weather
-
density starts to increase
-
there are no longer jet streams and CAT
-
it indicates the height of the thermal wind
Question 6
Question
The main Ozone layer is to be found in the:
Answer
-
termosphere
-
troposphere
-
mesosphere
-
stratosphere
Question 7
Question
The level in the atmosphere where the air temperature ceases to fall with
increase in height is known as:
Answer
-
The troposphere
-
The stratopause
-
The stratosphere
-
The tropopause
Question 8
Question
Which statement is correct when considering the lower layers of the atmosphere:
Answer
-
the majority of the weather is contained in the stratosphere and its upper
boundary is the tropopause
-
the majority of the weather is contained in the troposphere and its
upper boundary is the tropopause
-
the majority of the weather is contained in the tropopause and its upper
boundary is the troposphere
-
the majority of the weather is contained in the troposphere and its upper
boundary is the stratosphere
Question 9
Question
The atmosphere is a mixture of gases of the following proportions:
Answer
-
oxygen 21% nitrogen 78% other gases 1%
-
oxygen 21% hydrogen 78% other gases 1%
-
nitrogen 78% argon 21% oxygen 1%
-
nitrogen 78% oxygen 21% hydrogen 1%
Question 10
Question
In the ISA the temperature is isothermal:
Answer
-
Up to 36090 ft/11 kms
-
From 36090 ft/11kms to 65617 ft/20 kms.
-
From 36090 ft/11kms to 104987 ft/32 kms.
-
From 36090 ft/11kms to 45090 ft/13.75 kms.
Question 11
Question
The international (ICAO) Standard Atmosphere assumes that the sea level
atmospheric pressure is:
Answer
-
1013,25 mbs and decreases with an increase in height.
-
1013,25 mbs and increases with an increase in height.
-
1013,25 mbs and falls to about half this value at 30000 ft
-
1013,25 mbs and decreases with an increase in height up to the
tropopause. Above the tropopause it remains constant.
Question 12
Question
At sea level the ISA density is stated to be:
Question 13
Question
Which of the following statements is most correct when describing ISA:
Answer
-
the MSL pressure is 1013,25 mbs and the temperature is +15ºC
-
the MSL pressure is 1013,25 mbs and the temperature is +15ºC with a lapse rate of 1,98ºC/1000 ft
-
the MSL pressure is 1013,25 mbs and the temperature is +15ºC with a lapse rate of 1,98ºC/1000 ft up to 36090 ft above which there is frequently an inversion
-
the MSL pressure is 1013,25 mbs and the temperature is +15ºC with a lapse rate of 1,98ºC/1000 ft up to 36090 ft
Question 14
Question
The following is true for the International Standard Atmosphere:
Answer
-
at mean sea level the following conditions prevail: Temperature +15ºC, pressure 1013,25 hpa, density 1125 gm/m3
-
within the troposphere the temperature decreases by 6,5ºC per km
-
the tropopause is at a height of 36090 AGL
-
the temperature at the tropopause is 226,5 ºK
Question 15
Question
Pressure _____ with increase of height and in the ISA pressure will be _____ at
10000 ft and _____ at 30000 ft.
Answer
-
Increase/800mb/400mb
-
Decrease/700mb/300mb
-
Increase/200mb/800mb
-
Decrease/500mb/200mb