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Avit 102 > Block 5 > Flashcards

Block 5 Flashcards

1
Q

What are the 5 layers of the atmosphere?

A

Thermosphere, Mesosphere, Stratosphere, Tropopause, Troposphere

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2
Q

What layer does 90% of the weather occur?

A

Troposphere

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3
Q

Describe a low pressure system

A

Cyclonic flow (counterclockwise), upward motion of air.

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4
Q

Describe a high pressure system

A

Anticyclonic(clockwise), downward motion

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5
Q

What is Dewpoint

A

The temperature at which air reaches a state where it can hold no more water.

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6
Q

What is a sea breeze?

A

When cooler air moves into land (high pressure into low pressure)

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7
Q

What is a land breeze?

A

When a high pressure system moves outward towards the ocean (low pressure)

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8
Q

What is Radiation Fog?

A

Forms in low lying areas on calm, clear nights. As the ground cools at night the air temp at the surface cools to the dew point.

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9
Q

What is advection fog?

A

Forms as result of warm moist air condensing as it moves over a cooler surface.

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10
Q

What is upslope fog?

A

Result from warm moist air being cooled as it is forced up slopped terrain.
- most common in mountain ranges.

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11
Q

What is Steam fog?

A

Occurs when cold, dry air passes from land to warmer bodies of water.
- low level turbulence can occur.
- icing could become hazardous.

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12
Q

What is a cold front?

A

Cold air moving to displace warmer air.
- could contain servers thunderstorms.

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13
Q

What is a warm front?

A

Warm air moving to displace colder air.
- make for inclement weather over a wider area and can contain embedded thunderstorms.

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14
Q

How do you recognize passage? (3) (TWA)

A

Temperature change, wind direction change, air pressure change.

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15
Q

What is mechanical turbulence?

A

Obstacles that disturb smooth air flow (trees or buildings)

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16
Q

Convective Turbulence

A

Turbulence caused typically by surface heating

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17
Q

Frontal turbulence

A

Lift in of warm air by sloping frontal surface of a cold air mass

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18
Q

What causes weather?

A

Coriolis effect, caused by earths rotation, deflects winds to the right in the northern hemisphere.

19
Q

Stable air characteristics (4) (SSLC)

A

-Stratisform clouds
-Smooth air
-Low visibility
-Continuous precipitation

20
Q

Unstable air characteristics(5) (CTVPL)

A
  • Cumuliform clouds with vertical development
  • turbulence
  • good visibility
  • showery precipitation
  • higher actual lapse rate
21
Q

Stages of a thunderstorm

A

Cumulus(lifting), Mature(greatest intensity), and dissipating(downdrafts replace updraft)

22
Q

What is a microburst?

A

Strong as 6000fpm, associated with convective activity, about 15 minutes.

23
Q

When are METAR sent out?

A

Transmitted H+50 till the hour.

24
Q

What are Pilot reports and what are the types

A

Inflight weather observations made by pilots
-UA & UAA

25
Q

How long are TAF’s valid for?

A

24 hours from time of issuance.

26
Q

What are the types of TAFs (3) (FBT)

A

From- significant change, less than an hour
Becoming- gradual change over 2 hours
Temporary- expected to last generally less than an hour at a time, occur in half.

27
Q

What are the types of AIRMET’s? (STZ)

A

Sierra, Tango, and Zulu

28
Q

What is the IM SAFE checklist

A

-Illness
- Medications
- Stress
- Alcohol
- Fatigue
-Emotions/eating/external pressure

29
Q

What are cones

A

-Receptors for focal area
- detailed and color oriented

30
Q

What are Rods

A

-Receptors along periphery
- Not Sensitive to color
- detects movement and shape
- low light levels

31
Q

What altitude is night vision reduced by?

A

8,000 ft and by 25%

32
Q

What are leans?

A

Abrupt correction from a bank angle that was entered to slowly to stimulate. Creates illusion of banking other direction.

33
Q

What is the Coriolis illusion

A

Abrupt head movement that can creat the illusion of rotation or movement in an entirely different axis.

34
Q

What is a graveyard spin?

A

Proper recovery from a spin that can creat the illusion of entering a spin in the other direction.

35
Q

What is a graveyard spiral?

A

Going in a prolonged spiral descend that can creat the illusion of wings being level,

36
Q

What is Somatogravic Illusion?

A

A rapid acceleration during takeoff an creat the illusion of the nose being too high.

37
Q

What is a elevator illusion?

A

Abrupt vertical acceleration, usually by a updraft creates the illusion of being in a climb.

38
Q

What is Hypoxic hypoxia? Correction?

A

-Partial pressure of oxygen is insufficient
- breathe greater percentage of oxygen or oxygen under pressure.

39
Q

What is Hyperemic Hypoxia?

A
  • The oxygen carrying capacity of the blood is reduced(smoking)
    -get in clear air
40
Q

What is Stagnant hypoxia

A

-Oxygen deficiency due to impaired circulation
- reduce G forces

41
Q

What is Histotoxic hypoxia

A
  • Tissue cells are poisoned and unable to use oxygen (alcohol & cyanide)
  • take in more oxygen
42
Q

Symptoms of Hypoxia (4)

A

-Headache
- reduced reaction time
- imparted judgement
- Euphoria

43
Q

What is Effective Preformace Time

A

Amount of time a person can effectively preform a move due to loss of oxygen.

Avit 102 (10 decks)

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