Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

ATC NATTC > Weather > Flashcards

Weather Flashcards

(72 cards)

Start Studying
1
Q

Sea level temperature and pressure

A

Surface temp 15°C 59°F

Pressure to 29.92 inches Hg or 1013.2 mbar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Weight of atmosphere at sea level

A

14.7 pounds per square inch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Pressure decreases roughly 1 inch of mercury per __________ foot increase in altitude

A

1000

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Types of barometers

A

Mercurial and Aneroid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Altimeter setting indicator (ASI)

A

Primary means of obtaining altimeter Setting at terminal facility

Reports station pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Altimeter setting

A

Station pressure with the correction factor for field elevation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Altimeter

A

Barometer which is graduated to read height rather than pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Altitude

A

Height in feet above ground level or from mean sea level

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

True altitude

A

Actual altitude above mean sea level

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Indicated altitude

A

An altitude above mean sea level indicated on altimeter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Altimeter setting

A

Value to which scale of the pressure altimeter sit so the altimeter indicates true altitude at field elevation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Pressure high to low

A

Look out below

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Pressure low to high

A

Eyes to the sky

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Lapse rate

A

2°C or 3.3°F per thousand feet

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Pressure altitude

A

Altitude in the standard atmosphere where the current pressure surrounding the aircraft is found

FL180

29.92

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Density altitude

A

The altitude in the standard atmosphere for density of the air surrounding the aircraft is found

Pressure temperature and humidity determine air density

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

High density altitude

A

Center air reduces aircraft performance by reducing power thrust and lift. Lengthen takeoff and landing rolls

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Convection current

A

2 services he did unequally cause the uneven heating of the air above

Warm air rises as cool air sinks creating wind

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

advection

A

Horizontal movement of wind, can transfer heat or atmospheric properties from one area to another

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Coriolis effect

A

Action called by the rotation of the earth that affects the path of air currents. Deflecting air to the right in the northern hemisphere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Circulation

A

Airflow from areas of high pressure to areas of low pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Jet stream

A

Narrow band of strong winds moving through the upper atmosphere. Associated with frontal movements separating warm and cold there.

Creates high level wind shear/clear air turbulence (C a T)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Atmospheric pressure

A

A measure of weight that a column of air exerts on an object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Sea level temperature and pressure

A

Surface temp 15°C 59°F

Pressure to 29.92 inches Hg or 1013.2 mbar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Weight of atmosphere at sea level
14.7 pounds per square inch
26
Pressure decreases roughly 1 inch of mercury per __________ foot increase in altitude
1000
27
Types of barometers
Mercurial and Aneroid
28
Altimeter setting indicator (ASI)
Primary means of obtaining altimeter Setting at terminal facility Reports station pressure
29
Altimeter setting
Station pressure with the correction factor for field elevation
30
Altimeter
Barometer which is graduated to read height rather than pressure
31
Altitude
Height in feet above ground level or from mean sea level
32
True altitude
Actual altitude above mean sea level
33
Indicated altitude
An altitude above mean sea level indicated on altimeter
34
Altimeter setting
Value to which scale of the pressure altimeter sit so the altimeter indicates true altitude at field elevation
35
Pressure high to low
Look out below
36
Pressure low to high
Eyes to the sky
37
Lapse rate
2°C or 3.3°F per thousand feet
38
Pressure altitude
Altitude in the standard atmosphere where the current pressure surrounding the aircraft is found FL180 29.92
39
Density altitude
The altitude in the standard atmosphere for density of the air surrounding the aircraft is found Pressure temperature and humidity determine air density
40
High density altitude
Center air reduces aircraft performance by reducing power thrust and lift. Lengthen takeoff and landing rolls
41
Convection current
2 services he did unequally cause the uneven heating of the air above Warm air rises as cool air sinks creating wind
42
advection
Horizontal movement of wind, can transfer heat or atmospheric properties from one area to another
43
Coriolis effect
Action called by the rotation of the earth that affects the path of air currents. Deflecting air to the right in the northern hemisphere
44
Circulation
Airflow from areas of high pressure to areas of low pressure
45
Jet stream
Narrow band of strong winds moving through the upper atmosphere. Associated with frontal movements separating warm and cold there. Creates high level wind shear/clear air turbulence (C a T)
46
Atmospheric pressure
A measure of weight that a column of air exerts on an object
47
cumulus
ustable cloud caused by convection currents towering, cumulonibus (rain), cumulus fractus
48
stratus
low lying clouds formed when conditions are favorable for fog, wind 5kt or less
49
cirrus
high altitude feathery
50
nimbo/nimbus
suffix for rain
51
fractus
suffix for broken
52
TS
cumulus clouds in updrafts, mature stage begins precip, dissipating stage is caused by rain dragging air to the ground and high winds causing anviling
53
TS Hazzards
tornados(+FC), squall lines, wind shear, icing, hail, low vis, affects altimeter, lightning, microburst
54
Microburst
sudden down draft up to 2.5 mile outflow
55
unstable air
cumuliform clouds, showers, turbulence, good vis
56
stable air
stratiform clouds and fog, continuous precip, fair to poor vis
57
north american airflow
west to east
58
cold front
wind shifts clockwise blowing northwest | 15 knots with thunderstorms
59
fast moving cold front
25 to 30 knots with squall lines possible tornadoes
60
warm front
10 knots, wind shift clockwise to blow southwest, steady precip on leading edge, fog
61
occluded front
cold front overtaking warm front, severe weather 150 miles from the occlusion point (triple point)
62
stationary front
little or no movement, may greatly hamper flight ops by staying in area for days, weather dependent on humidity and stability of air
63
air to ground vis
slant range
64
radiation fog
most common to ATC, caused by cooling of earths surface
65
advection fog
most air moving over cold ground or water
66
upslope fog
air force cooled on slopes
67
steam fog
dew point is raised to temp of air, cold air over warm water
68
frontal fog
warm rain failing through cold air raises the dew point
69
FU and HZ
smoke and haze, most dangerous during temp inversion (occluded front)
70
blowing snow dust and sand
reduce vis to near zero over extensive areas
71
Icing intensities
trace, light, moderate, severe
72
turbulence types
convective-caused by uneven heating of earths surface | mechanical-

ATC NATTC (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions