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FAA Part 107 > Weather > Flashcards

Weather Flashcards

1
Q

Increase in Temperature and Pressure Every 1000 Ft

A

2C Increase and 1 inmg decrease

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2
Q

+

A

Heavy

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3
Q

TS

A

Thunderstorm

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4
Q

RA

A

Rain

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5
Q

BR

A

Mist

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6
Q

Ao1

A

No Precip

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7
Q

Ao2

A

With Precip

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8
Q

When are Convective SIGMETS Issued?

A

Surface winds greater then 50 kts and hail at SRFC >= 3/4 in or tornadoes

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9
Q

High Density Altitude

A

Low density air, hot, humid, high

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10
Q

What can cause low level Wind shear?

A

Passing frontal systems, thunderstorms, and temperature inversions

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11
Q

What is a Microburst associated with?

A

Convective precipitation into dry air at a cloud base

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12
Q

What is Microburst a type of

A

low-level wind shear

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13
Q

What is the lifespan and speed of a microburst

A

5-15 min, with downdrafts of up to 6000fpm and headwind losses of 30-90 knots

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14
Q

What is Atmospheric stability

A

The measure of an atmosphere’s ability to resist vertical motion

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15
Q

What determines the stability of the air?

A

Moisture and Temperature

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16
Q

What is Stable Air

A

Cool, dry air, good and generally clear weather. Stratiform clouds and fog, continuous precipitation and smooth air, fair to poor viability.

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17
Q

What is Unstable air

A

Moist and warm, typically forms thunderstorms can can have good visability but rough air

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18
Q

Upslope Fog

A

Requires Wind

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19
Q

Steam Fog

A

Low level turbulence and icing can becom hazardous

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20
Q

Precipitation induced Fog

A
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21
Q

Advection Fog

A

Requires wind, air mass moves inland form the coast in the winter

22
Q

Radiation Fog

A

Frequency forms when warm moist air exists over low areas on clear and calm nights

23
Q

What is Temperurture inversion and what are its characteristics

A

When warm air is n top of some cold air. Smooth air and poor visability

24
Q

Warm Front

A

Rain and low ceilings in from, t-storms less likely

25
Q

Cold Fromt

A

Cloudy, hail in advance of front, storms along front, clear behind

26
Q

Speed of wind at mountain top level

A

> 25 knots suggests some turbulence

27
Q

When should you be take caution in mountain flying wind

A

40kt wind

28
Q

Mount flying with stratified clouds

A

Stable air

29
Q

Moutning flying with lenticular and/or rotor clouds

A

Suggest mountain wave: expect turnulance many miles to lee of mountains. Relatively smooth flight on the windward side

30
Q

Convective vlouds on mountains

A

If they are on the windward side it sujests unstable air and turbulence on either side of the mountain

31
Q

What are VFR conditions?

A

Ceiling>+ 1000ft AGL and/or visibility >=3 miles. Scattered clouds don’t mean ceiling

32
Q

What are the conditions necessary for structural icing?

A

Visible weather(rain, or cloud drops) and temperature of the surface of the object must be 0C or colder

33
Q

What is the first stage of the thunderstorm life cycle?

A

Updraft varies in strength, extends from near surface to cloud top inadvisable to operate drone( 3-5 mile height)

34
Q

What is the second stage of the Thunderstorm Life Cycle

A

Precipitations begins to fall from the cloud base and it signals that downdraft had developed and the cell has entered the mature stage(5-10 mile height)

35
Q

What is the third stage of the Thunderstorm life cycle?

A

Rain has ended, downdrafts abated( 5-7 mile height)

36
Q

High Air Masses

A

Rotate right, good weather

37
Q

Low air masses

A

Rotate Left, poor weather

38
Q

What is a frontal passage marked by?

A

A change in temperature and wind directions

39
Q

Class A Airspace

A

18000 MSL to FL600

40
Q

Class B Airspace

A

Surface to 10000 MSL

41
Q

Class C Airspace

A

Surface to 4000 MSL

42
Q

Class D Airspace

A

2500 MSL

43
Q

Class E Airspace

A

2500 AGL

44
Q

Glass G airspace

A

Extends from ground to 700 or 1200 AGL

45
Q

VFR for UAS for clous

A

500 ft below and 2000’ away horizonatlly

46
Q

Anti-Authority

A

“Dont tell me what to do”

47
Q

Impulsivity

A

“Do it quickly”

48
Q

Inulnerability

A

“It wont happen to me”

49
Q

Machoism

A

“I can do it-Ill show them”

50
Q

Resignation

A

‘Whats the use?”

FAA Part 107 (1 decks)

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