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PPL Exam – Meteorology questions with correct answers
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PPL Exam – Meteorology questions with correct answers
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PPL Exam – Meteorology questions with correctanswers
Where does majority of weather occur? Correct Answer-Troposphere
How high is the troposphere in Polar regions? Correct Answer-25,000 to
35,000 feet
How high is the troposphere in Equatorial regions? Correct Answer-
50,000 to 60,000 feet
What are the 4 levels of the atmosphere in order from the bottom up?
Correct Answer-1. Troposphere
2. Stratosphere
3. Mesosphere
4. Thermosphere
How is the atmosphere warmed? Correct Answer-The suns radiation
which is primarily shortwave radiation is first directly absorbed by the
surface of the earth. This heats the earth which in turn reradiates the heat
at a much longer wavelength which is absorbed by the atmosphere
What are some drivers of weather on Earth? Correct Answer-- Seasonal
variations which expose one hemisphere to more sunlight than yet
another depending on the time of year
- Latitude variations
,- Day/Night variations
- Different surfaces on the earth absorbing and reflecting heat
differently. For example, a dark rocky surface will absorb more sunlight
directly than a surface covered in vegetation
What is the lapse rate in a standard atmosphere? Correct Answer-1.98˚C
per 1,000ft
What is the dry adiabatic lapse rate? Correct Answer-3˚C per 1000ft
What is the wet adiabatic lapse rate? Correct Answer-1.5˚C per 1,000
feet
What is a stable atompshere? Correct Answer-A stable atmosphere
occurs when the environmental lapse rate is shallow or even negative
What is an inversion? Correct Answer-When the lapse rate is negative,
the condition is known as an inversion any air which rises were cool
adiabatically and in doing so we're cool more rapidly than the
surrounding air which cools at the environmental lapse rate. Because
rising air cools faster than its surroundings it will sink back after rising
What is a unstable atmosphere? Correct Answer-An unstable
atmosphere arises when the environmental lapse rate is steeper than both
the dry adiabatic lapse rate and the wet adiabatic lapse rate.
, What is a Conditional Unstable Atmosphere? Correct Answer-A
conditional unstable atmosphere arises when the environmental lapse
rate is somewhere between the dry and adiabatic lapse rate.
What is the international temperature at sea level? Correct Answer-15˚C
What is the international environmental lapse rate? Correct Answer-2˚C
per 1,000'
What is the international pressure at sea level? Correct Answer-29.92''
HG=1013 hPa = 1013millibars = 14.69psi
True or False: Atmospheric pressure drops by approximately 1 '' of
mercury for every 1,000 feet that you climb in the lower atmosphere
Correct Answer-True
What is the height of the tropopause (ISA)? Correct Answer-36, 090 feet
What is humidity? Correct Answer-The higher the temperature of the
air, the greater the quantity of water which it can hold
What is relative humidity? Correct Answer-Is the amount of water in the
air relative to the maximum which I can hold at that temperature and
pressure
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