Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
35 Cards in this Set
- Front
- Back
Meteorology is the study of both ____ and ____.
|
Weather, climate
|
|
Which gasses is the atmosphere composed of?
|
Argon, Carbon Dioxide, Nitrogen, Oxygen
|
|
The atmosphere is composed of:
Argon ___% Carbon Dioxide ___% Nitrogen ___% Oxygen ___% |
0.93, 0.03, 78, 21
|
|
What does ICAO stand for?
|
International Civil Aviation Organisation
|
|
What does MSL stand for?
|
Mean sea level
|
|
What does AMSL stand for?
|
Above mean sea level
|
|
The ICAO standard atmosphere at MSL is:
Temperature ___ Pressure ___ Density ___ |
15'C, 1013.25Hpa, 1225g per cubic meter
|
|
Under ICAO, AMSL temperature decreases by ___'C/km, up to ___km (____' )where the temperature is (___'C). This is called the _____.
|
6.5, 11, 36090, -56.5, troposphere
|
|
From 11km to ____km (____' ) the temperature remains ____ at ____'C. This is called the _____.
|
20, 65617, -56.5, tropopause
|
|
From 20km up to ___km (____' ) the temperature ____ by ____'C/km. This is called the _____.
|
32, 104987, increases, 1, stratosphere.
|
|
Explain an isobar.
|
A line joining all places having the same pressure at a given level (usually MSL).
|
|
Explain a pressure gradient.
|
This is the rate of change of pressure. When isobars are close together there is a steep pressure gradient.
|
|
QNH is the observed ____ pressure reduced to ___ assuming ____ conditions. It is a local altimeter setting that indicates the aircrafts altitude ____, therefore the ____ elevation.
|
barometric, MSL, ISA, AMSL, airfields
|
|
What does ISA stand for?
|
International standard atmosphere
|
|
QFF is similar to ____ but uses ____ conditions to find the ____ .
|
QNH, actual, MSL.
|
|
QNE is the height indicated on the altimeter on landing at an aerodrome when it is set for ____. This is also known as ____ ____.
|
1013.25mb. Standard Setting.
|
|
Name the three layers in our atmosphere.
|
Troposphere, Tropopause, Stratosphere
|
|
What does SALR stand for?
|
Saturated Adiabatic Lapse Rate
|
|
SALR is the ____ _____ change for ____ air as it ____. Commences at the height where the air reaches ____ ____ ____. The air ____ to form a ____. In this process it releases ____ heat. Above this height, the air cools at a rate of ___'C/1000'.
|
adiabatic temperature, saturated, rises, dew point temperature, condenses, cloud, latent, 1.5.
|
|
What does adiabatic mean?
|
It a reference to a process that occurs without heat transfer.
|
|
What does DALR stand for.
|
Dry adiabatic lapse rate.
|
|
DALR is the ____ ____ change for _____ air as it ____. This air decreases at ____'C/1000'.
|
adiabatic temperature, unsaturated, rises 3.
|
|
What does ELR stand for?
|
Environmental lapse rate
|
|
The ISA assumes an ELR of ___'C/1000'. This is ____ always correct.
|
2, not
|
|
As air cools it becomes ____.
|
Saturated
|
|
Name the 4 reasons/types for cloud formation.
|
Orographic Cloud, Turbulence Cloud, Frontal Cloud,
|
|
Orographic cloud is formed due to the ____ of air over ____ or ____ ground.
|
ascent, high, rising
|
|
Turbulence cloud is formed due to the airflow producing a ____ _____ layer, caused by either the underlying Earths ____ or another airflow associated with ____ ____ change at ____ levels.
|
frictional turbulence, surface, rapid wind, upper.
|
|
There are ____ types of frontal cloud. Name them.
|
Two, Warm front, cold front.
|
|
Warm fronts move ____ than cold fronts.
|
slower.
|
|
The approach of a warm front can be indicated by ____. Then ____, ____ and ____ in that order. As the front approached the cloud layer ____ and ____.
|
cirrus, cirrostratus, altostratus, nimbostratus, thickens, lowers.
|
|
With a warm front, the cold air is ____ of the front.
|
ahead
|
|
With a cold front, the cold air is ____ the front.
|
behind
|
|
A cold front forces the warm air to ____ rapidly. The warm air ____ only in the ____ levels. At the middle level there is ____ movement of warm air in the direction of advancement.
|
rise, ascends, lower, horizontal.
|
|
In a cold front, if the warm air is unstable it will form large ____ clouds that may develop into ____ clouds. More frequently, the more stable air will form into ____, ____ and ____, with some clusters of ____ or ____.
|
cumulus, cumulonimbus, stratocumulus, altocumulus, altostratus, cumulus, cumulonimbus.
|