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PPL Exam – Meteorology || with 100% Correct Answers.

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  • PPL – Meteorology

Where does majority of weather occur? correct answers Troposphere How high is the troposphere in Polar regions? correct answers 25,000 to 35,000 feet How high is the troposphere in Equatorial regions? correct answers 50,000 to 60,000 feet What are the 4 levels of the atmosphere in order fr...

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  • August 18, 2024
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  • 2024/2025
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  • PPL – Meteorology
  • PPL – Meteorology
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PPL Exam – Meteorology || with 100% Correct Answers.
Where does majority of weather occur? correct answers Troposphere

How high is the troposphere in Polar regions? correct answers 25,000 to 35,000 feet

How high is the troposphere in Equatorial regions? correct answers 50,000 to 60,000 feet

What are the 4 levels of the atmosphere in order from the bottom up? correct answers 1.
Troposphere
2. Stratosphere
3. Mesosphere
4. Thermosphere

How is the atmosphere warmed? correct answers 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 answers - 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 answers 1.98˚C per 1,000ft

What is the dry adiabatic lapse rate? correct answers 3˚C per 1000ft

What is the wet adiabatic lapse rate? correct answers 1.5˚C per 1,000 feet

What is a stable atompshere? correct answers A stable atmosphere occurs when the
environmental lapse rate is shallow or even negative

What is an inversion? correct answers 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 answers 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 answers 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 answers 15˚C

What is the international environmental lapse rate? correct answers 2˚C per 1,000'

What is the international pressure at sea level? correct answers 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 answers True

What is the height of the tropopause (ISA)? correct answers 36, 090 feet

What is humidity? correct answers The higher the temperature of the air, the greater the quantity
of water which it can hold

What is relative humidity? correct answers Is the amount of water in the air relative to the
maximum which I can hold at that temperature and pressure

What is dewpoint? correct answers If air is cool that constant pressure the temperature at which
condensation begins is known as the dewpoint. The closer the dewpoint temperature is to the
outside air temperature, the most likely it is that clouds will form

True or False: Water vapour is less dense than dryer. As a result, the higher the humidity, the less
dense the air and the poorer airplane performance will be correct answers True

What is convection? correct answers Is the vertical movement of air

What is Advection? correct answers Is the horizontal movement of air

What is Sublimation? correct answers When a solid changes phase directly to a gas without
going through the liquid phase

What is deposition? correct answers When I gas changes directly to a solid without going
through the liquid phase

What are Isobars? correct answers These are lines of constant pressure

What are Isotachs? correct answers These are lines of constant wind velocity

What are Contour Lines? correct answers These are lines joining points for the altitude I wish I
specified pressure occurs is constant

True or False: Air moves from Low to High pressure Locations correct answers False

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