JX101 - ATMOSPHERIC STRUCTURE & MECHANICS Flashcards
A weak pressure gradient force would be indicated by a _____ isobar spacing.
A) narrow
B) tight
C) wide
D) 1 mile
C) wide
A condition where the air temperature aloft is higher than that of the lower atmosphere is generally referred to as a temperature
A) inversion.
B) conversion.
C) reversal.
D) anomaly.
A) inversion.
The forces that determine the wind direction in the atmosphere are weakened at the Earth’s surface by the force of
A) friction.
B) gravity.
C) local winds.
D) air pressure.
A) friction.
The height of an aircraft above the ground is known as _____ altitude.
A) indicated
B) pressure
C) density
D) absolute
D) absolute
Air is _____ when it contains the maximum moisture possible for a given temperature.
A) thin
B) saturated
C) expanded
D) condensed
B) saturated
The decrease in atmospheric temperature with increasing altitude is called what?
A) Lapse rate
B) Dissipation rate
C) Thermal lapse
D) Thermal dissipation
A) Lapse rate
Below 2000 feet AGL, _____ reduces the speed of the wind.
A) gravity
B) friction
C) air pressure
D) Coriolis force
B) friction
Standard sea level pressure is 1013.2 mb or ______ inHg.
A) 32.25
B) 31.00
C) 29.92
D) 28.82
C) 29.92
Names of middle clouds contain the prefix
A) cumulo-.
B) nimbo-.
C) cirro-.
D) alto-.
D) alto-.
What is the standard temperature lapse rate of the atmosphere in °Celsius per 1000 feet?
A) 1.0
B) 1.5
C) 2.0
D) 2.5
C) 2.0
Lifted air that is warmer than surrounding air continues to rise and indicates a(n) _____ condition.
A) stable
B) unstable
C) neutrally stable
D) positively stable
B) unstable
For every 11 °C the temperature varies from the standard, there will be a _____% altimeter error.
A) 2
B) 4
C) 6
D) 11
B) 4
