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Level 3 exam > Level 3 exam > Flashcards

Level 3 exam Flashcards

1
Q

what are the 3 major gases in the air?

A

Nitrogen78%, oxygen21% and other1%

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2
Q

The higher you go___and___decreases.

A

density and temperature.

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3
Q

Why is water vapor important?

A

Allows clouds, precipitation, animals and plants.

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4
Q

what are the four parts of the atmosphere?

A

Troposphere, stratosphere, mesosphere, thermosphere

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5
Q

what happens in the troposphere?

A

weather. water vapor is here.

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6
Q

what is in the stratosphere?

A

The Ozone layer that protects earth from solar radiation.

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7
Q

what happens in the mesosphere?

A

temperature reaches 100 degrees Celsius. Meteorites burn up here.

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8
Q

what happens to the thermosphere?

A

The thermosphere is the area that is affected by solar radiation.

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9
Q

What is jet stream?

A

It is the upper troposphere.

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10
Q

what is between each layer of the atmosphere?

A

tropopause, mesopause etc

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11
Q

ICAO assumes what 4 things about North Americas atmosphere?

A

Air is a dry gas
Mean sea level 29.92 inch of mercury
mean sea level temp of 15°c
Temperature decrease of 1.98°c per 1000ft

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12
Q

The decrease in___and___is/isn’t constant.

A

temperature and density is not constant.

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13
Q

ICAO’s assumptions are based off of what seasons?

A

Summer and winter

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14
Q

Capacity for expansion is?

A

air forced to rise

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15
Q

Capacity for compression is?

A

air becoming dense and cool

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16
Q

What 3 things affects the atmosphere?

A

Temperature, density and pressure

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17
Q

What principals influence longitudinal stability?

A

the horizontal stabilizer and the center of gravity.

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18
Q

vertical air causes what?

A

expansion and compression

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19
Q

air moves__to__.

A

horizontally to fill gaps

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20
Q

Cumulus clouds are formed in___air.

A

unstable

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21
Q

Stratus is formed in___air

A

stable

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22
Q

cumulus clouds indicate what in the weather?

A

warm days turning to stormy

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23
Q

stratus clouds form in what type of weather?

A

can from in any but prefer cold weather.

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24
Q

what are the four types of clouds?

A

low(stratus),middle(alto),high(cirrus),vertical development(cumulus)

25
Q

What type of cloud is extremely dangerous to fly through?

A

cumulonimbus

26
Q

good weather is represented by___clouds.

A

cirrus

27
Q

Bad weather is indicated by ___clouds.

A

alto or cumulonimbus.

28
Q

light precipitation comes from what types of clouds?

A

stratus and nimbostratus

29
Q

what is the stereotype cloud?

A

cumulus

30
Q

Aspects of stable air are….

A

poor visibility, stratus, steady precipitation, steady wind

31
Q

Aspects of unstable air are….

A

good visibility, cumulus, showery, gusty wind, turbulence

32
Q

What are the five kinds of lifting agents?

A

convection, convergence, orographical lift, frontal lift and mechanical turbulence.

33
Q

what two things together shape clouds?

A

lifting agents and air stability

34
Q

what decides the cloud type?

A

air stability

35
Q

what decides the air stability?

A

lifting agents

36
Q

what is stability?

A

the tendency of an aircraft to remain upwards, straight and level during flight

37
Q

what is static stability?

A

initial tendency of an aircraft to correct itself

38
Q

what is dynamic stability?

A

the overall tendency of an aircraft to correct itself

39
Q

what is positive stability?

A

aircraft returns with no corrections from pilot

40
Q

what is neutral stability?

A

stays at changed attitude

41
Q

what is negative stability?

A

attitude keeps getting worse

42
Q

what is longitudinal stability, and what part of the plane affects it?

A

stability of lateral axis aka pitch heavy nose

43
Q

what is directional stability, and what part of the plane affects this?

A

stability of vertical axis aka yaw fin/tail

44
Q

define wind

A

horizontal movement of air

45
Q

define isobars

A

areas of like pressure

46
Q

define aspects of low pressure

A

cyclones, low pressure center, 800km/day summer 1100km/day during winter, not in one place for long, counter clockwise spin

47
Q

define aspects of high pressure

A

anti cyclones, high pressure centers, stays in one place for long periods of time, clockwise spins

48
Q

what is relative humidity?

A

actual % of water in air

49
Q

saturated air has a humidity of__?

A

100

50
Q

what is dew point?

A

The dew point is the temperature to which air must be cooled to become saturated
Small drops in temperature causes clouds and or precipitation

51
Q

is it a big or little difference between dewpoint and temperature?

A

little

52
Q

what affects longitudinal stability?

A

horizontal stabilizers and center of gravity

53
Q

is wind parallel or not parallel to isobars

A

it is parallel

54
Q

what is convection

A

water heated by the sun after touching the earths surface

55
Q

what is orographical lift

A

wind forces upwards by a mountain

56
Q

capacity for expansion creates what

A

clouds

57
Q

what is needed for air to become saturated

A

constant pressure

58
Q

what is frontal lift?

A

warm air going over cold air.

Level 3 exam (1 decks)

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