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CBT IR > Meteo > Flashcards

Meteo Flashcards

1
Q

Supercool water

A

-40c

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2
Q

Tropopause

A

Not vary altitude, not continue

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3
Q

Dewpoint associated with

A

temp and relative humidity

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4
Q

Earth

A

Stratosphere

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5
Q

Icing condition

A

0 to -5c (ตอบอันที่ร้อนสุด)

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6
Q

Thermal depend on

A

เกิดจาก Solar heat

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7
Q

Metar

A

Runway visual range

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8
Q

บินแบบ cross country เข้า headwind

A

Best lift/drag(L/D), decrease a/s

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9
Q

In northern hemisphere airmass move by

A

Colioris

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10
Q

Cool, dense air lift warm air

A

Pressure gradient force

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11
Q

Approaching Thunderstorm with hail

A

Several mile downwind from under Thunderstorm

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12
Q

Northern hemisphere

A

High-clockwise, low-counter clockwise

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13
Q

Radiation fog

A

Calm night

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14
Q

Observer visibility during landing under IFR called

A

RVR(runway visual range)

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15
Q

ISOBAR

A

Equal pressure

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16
Q

Equator

A

Temperature higher than polar

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17
Q

Temp of tropopause

A

Warm than either side

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18
Q

When cool air replace warm

A

Convection

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19
Q

8000’ (top cumulus cloud at 8000’ greatest turbulence will expect at)

A

5000’

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20
Q

lapse rate 4c/1000’

A

The air is absolute stable

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21
Q

Sea level under standard condition

A

1013mb 59F 15c 29.92in.hg.

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22
Q

Condition when soaring vicinity Thunderstorm

A

wind shear and turbulence

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23
Q

Thunderstorm most hazard aircraft

A

Squall line Thunderstorm

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24
Q

fog become stratus cloud

A

heat from industrial area

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25
Q

why front hazardous flight

A

front spoils… …decrease lift

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26
Q

the formation of radiation fog

A

warm, moist … flatland … clear calm night

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27
Q

cloud with greatest turbulence

A

Cumulonimbus

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28
Q

a sudden increase wind speed 15 knots/1min

A

Squall

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29
Q

frost

A

temperature … adjacent below freezing

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30
Q

CAV-OK

A

when all of these condition exist

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31
Q

ice pellet at surface is evidence

A

a temperature inversion with freezing rain at higher altitude

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32
Q

wind shear occur

A

at any altitude, sudden variation in wind speed or direction

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33
Q

cycle of TS, predominately by downdrafts

A

Dissipating

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34
Q

flying across front is a change in

A

wind direction

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35
Q

frost affect a/c t/o

A

frost may prevent … airborne … normal t/o speed

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36
Q

cloud associated with warm front

A

all form of start with rain and fog

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37
Q

temp, dew point, spread small, decrease 62F

A

Fog or low clouds

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38
Q

the area of strongest turbulence encountered when departing a jet stream

A

Below the core on the polar side

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39
Q

Convection circulation + seabreeze cause by

A

Cool dense air moving inland from over the water

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40
Q

aircraft structural icing have highest accumulation rate

A

freezing rain

41
Q

water vapor which air can hold depends on

A

air temperature

42
Q

Thailand lat 7N 23N … lies be

A

Sub tropical … high pressure, Sub polar … low pressure

43
Q

sea breeze front most suitable for soaring flight

A

During the afternoon

44
Q

every process of weather is the result of

A

heat exchange

45
Q

what cause variation in altimeter between

A

Unequal heating Earth’s surface

46
Q

the development of thermals depends upon

A

solar heating

47
Q

wind 5000’ … southwesterly … southerly …

A

friction between wind and surface

48
Q

convective circulation pattern … sea breezes cause by

A

cool dense air moving inland from over the water

49
Q

proper a/s when flying between thermal - cross country

A

the best lift/drag speed increased by one half

50
Q

temperature inversion …

A

increase in temp as altitude increase

51
Q

type of ground or surface-based inversion … produced by

A

terrestrial radiation on a clear still night

52
Q

dew point

A

the temperature to which air must be cooled to become saturated

53
Q

amount of water vapor … air can hold depend on

A

air temperature

54
Q

clouds, fog, or dew - form when

A

water vapor condense

55
Q

processes, moisture added to unsaturated air

A

evaporation and sublimation

56
Q

If temp/dew spread small and decrease 62F

A

fog or low clouds

57
Q

boundary … two different air mass …

A

front

58
Q

one of the most easy recognized discontinuities across a front

A

a change in temp

59
Q

weather phenomenon … flying across front … change

A

wind direction

60
Q

which period is sea breeze front suit for soaring flight

A

during the afternoon

61
Q

beneath low-level temp inversion when relative humidity is high

A

smooth air, poor visibility, fog, haze, or low cloud

62
Q

measurement used to determine stability atmosphere

A

actual lapse rate

63
Q

decrease stability of an air mass

A

warming from below

64
Q

characteristic of stable air

A

stratiform cloud

65
Q

associated with a temperature inversion

A

a stable layer of air

66
Q

characteristic of moist, unstable air mass

A

cumuliform cloud and showery precipitation

67
Q

characteristic of unstable air

A

turbulence and good surface visibility

68
Q

stable air mass is …

A

poor surface visibility

69
Q

moist, stable air flowing upslope … expected to

A

produce stratus type cloud

70
Q

if unstable air mass is forced upward … clouds be …

A

cloud with considerable vertical development and associate turbulence

71
Q

steady precipitating proceeding a front is indication of

A

stratiform cloud with little or no turbulence

72
Q

condition for formation cumulonimbus cloud

A

unstable, moist air

73
Q

cumulus cloud … surface temp at 1000’ 70 dew 48

A

6000’

74
Q

cumulus cloud … surface temp … 82 dew 38

A

10000’

75
Q

nimbus

A

rain cloud

76
Q

cloud divided four families

A

height range

77
Q

cloud greatest turbulence

A

Cumulonimbus

78
Q

almond lens shape … 50 knots

A

lenticular cloud

79
Q

crests of standing mountain waves lens shaped

A

standing lenticular clouds

80
Q

could type would indicate convective turbulence

A

Towering cumulus cloud

81
Q

Possible mountain wave turbulence could anticipated when wind of 40 knots or greater below

A

across mountain ridge, and the air is stable

82
Q

upon encountering severe turbulence … pilot … maintain

A

level flight attitude

83
Q

what feature is associated with cumulus stage … thunderstorm

A

Continuous updraft

84
Q

which phenomenon signals beginning of mature stage TS

A

Precipitation beginning to fall

85
Q

condition necessary for formation TS

A

high humidity, lifting force, unstable condition

86
Q

during the life cycle of TS, which state predominately by downdraft

A

Dissipating

87
Q

Thunderstorm reach their greatest intensity during

A

Mature stage

88
Q

Thunders … produce the most intense hazard to a/c

A

squall line thunderstorm

89
Q

non frontal narrow band of active TS often develop ahead of cold front is

A

squall line

90
Q

If there TS - airport plan to land - hazardous expected

A

wind-shear turbulence

91
Q

phenomenon always associated with TS

A

lightning

92
Q

the most hazardous condition when soaring in TS

A

wind shear and turbulence

93
Q

where wind shear occur

A

all altitude, all direction

94
Q

when wind shear be expected

A

in area low-level temp inversion frontal zone and … clear air turbulence

95
Q

wind speed at 2000’-4000’

A

25 knots

96
Q

ice pellet at the surface is evidence that …

A

temperature inversion with freezing rain at a higher altitude

97
Q

in-flight condition necessary for structural icing to form is

A

visible moisture

98
Q

aircraft structural icing most … accumulation rate

A

freezing rain

99
Q

how far 7.5 mins, gs 114 knots

A

14.25

CBT IR (3 decks)

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