i4.a. Basic Weather Principles
The process through which energy transfers from one substance to another through contact is called:
Conduction.
As water transitions between phases, it absorbs and releases _______.
Latent heat.
What affects the stability of an air parcel?
Temperature.
What does the indicated altitude show?
Altitude adjusted for nonstandard pressure variations when set to local altimeter settings.
Which layer of the atmosphere is closest to the Earth's surface?
Troposphere.
What occurs when the temperature of the atmosphere increases with altitude due to the surface cooling faster than the air above it?
A temperature inversion.
What is the standard pressure at mean sea level?
29.92 in.Hg. or 1013.25 mb.
What is the standard temperature lapse rate in the Standard Atmosphere?
6.5 °C per 1,000 m. or 2 °C (3.57 °F) per 1,000 ft.
What affects air density?
Pressure (altitude) Temperature Mass
High-density altitude causes hazards for aircraft by:
Reducing power, thrust, and lift.
The difference between the air temperature and dewpoint is called:
The dewpoint spread.
