Test Review

Question 1

Dry air

Answer 1

78% nitrogen
21% oxygen
1% other gases

Question 2

Natural air composition

Answer 2

Water vapor and condensation nuclei

Question 3

Layer of the atmosphere where weather occurs

Answer 3

Troposphere

Question 4

3 conditions that affect atmosphere circulation

Answer 4

Uneven heating, Coriolis, tilt of earth

Question 5

Difference between C and M

Answer 5

Continental and maritime

Occurs over land and other over water

Question 6

Difference between T and P

Answer 6

Tropical and Polar

Warm vs cold

Question 7

4 types of heat transfer

Answer 7

Convection
Radiation
Advection
Conduction

Question 8

How does temp inversión occur.

Answer 8

Increase of temp with altitude

Question 9

Two types of temp inversion

Answer 9

Radiation and frontal

Question 10

What would prevent radiation temp inversion from occurring?

Answer 10

Overcast clouds

Question 11

What is the standard MSL pressure and millibars?

Answer 11

29.92 and 1013.2

Question 12

How do isobars help show wind speed?

Answer 12

Closer they are the stronger and faster winds are

Question 13

Low pressure description

Answer 13

Rising lifting pressure, worse weather

Question 14

High pressure description

Answer 14

Decreasing pressure, better weather

Question 15

What causes winds to flow across the isobars below 2000 AGL instead of going parralel?

Answer 15

Surface friction

Question 16

Wind coming in right door

Answer 16

Going to high pressure, better weather

Question 17

Wind coming from left door

Answer 17

Going into low pressure, worse weather

Question 18

Evaporation description

Answer 18

Liquid to vapor/gas

Question 19

Condensation description

Answer 19

Vapor to liquid (a cloud, visible moisture)

Question 20

Sublimation description

Answer 20

Solid to Gas (dry ice)

Question 21

Deposition description

Answer 21

Vapor to solid (snow)

Question 22

What is the Adiabatic cooling process

Answer 22

Air changes without the addition or subtraction of heat

Question 23

What term in the adiabatic process describes when the clouds form, temp and dew point are the same

Answer 23

Level of condensation

Question 24

Difference between CU and CB

Answer 24

CU - cumuliform (only has updraft)

CB - cumulonimbus ( has moisture, rain, ice)

Question 25

NS

Answer 25

Nimbostratus, dense, threatening clouds

Question 26

ST

Answer 26

Stratus, horizontal without rain

Question 27

Primary cause of frontal weather

Answer 27

Lifting of warm moist air by colder dense air

Question 28

4 changes for frontal symbol

Answer 28

Temp, moisture, pressure, wind shift

Question 29

Which fronts have a temp inversion?

Answer 29

All

Question 30

Cold front description

Answer 30

1/80, steep slope, moves to SE, AVERAGE SPEED 25-30 KTS

Question 31

What is the wind direction change ahead vs behind a cold front

Answer 31

Behind winds from NW | In front winds are from SW 90º shift

Question 32

What happens in front of fast moving cold front?

Answer 32

Squall line, tornados, hail, destructive winds

Question 33

Warm front description

Answer 33

Shallow slope 1/200, moves to NE, slower than cold front, behind the front the winds come from the SW, in front of the front the winds are coming from the SE.

Question 34

Where does the warm front weather occur?

Answer 34

In front of the warm front

Question 35

Wind direction on either side of stationary front go what way?

Answer 35

Wind is parallel to the front and going opposite directions

Question 36

What front has the worst weather?

Answer 36

Occluded, has both cold and warm front weather

Question 37

When flying near a warm front, what are your action?

Answer 37

Have alternate landing location,

Question 38

When flying near cold front what are your actions?

Answer 38

Land and wait or circumnavigate

Question 39

What is your occlusion flight procedure

Answer 39

Circumnavigate or land and wait

Question 40

Easily recognizable indicators when flying through a front

Answer 40

Wind shift 90º | Temperature change

Question 41

4 conditions for formation of fog

Answer 41

Temp and dew point near 2º Light surface wind Cooling land surface Condensation nuclei

Question 42

3 factors for dissipation

Answer 42

Strong winds Heating Greenhouse effect/overcast sky

Question 43

What prevents fog but can prevent dissipation of fog

Answer 43

Overcast sky/greenhouse effect

Question 44

What kind of fog is when moist air flows over cold surface?

Answer 44

Advection fog, happens near bodies of water

Question 45

What kind of fog happens through adiabatic cooling?

Answer 45

Upslope fog

Question 46

Fog that happens through deposition

Answer 46

Ice fog

Question 47

Radiation fog is caused by what process?

Answer 47

Radiation

Question 48

Small water droplets falling through inversion temp is what kind of fog?

Answer 48

Precipitation fog

Question 49

Difference between rime ice and clear ice

Answer 49

Rime is milky, caused by warm front, Small water droplets, Clear is large and caused by freezing rain

Question 50

7 hazards of icing

Answer 50

Loss of visibility, Loss of auto rotation, increase in drag and weight, Caused rotor blades to stall sooner

Question 51

If pilot systems get clogged what happens?

Answer 51

Airspeed indicator is affected

Question 52

3 conditions for thunderstorm to form

Answer 52

Unstable air, high moisture, lifting action

Question 53

3 categories of thunderstorms

Answer 53

Air mass Orographic Frontal

Question 54

3 stages of thunderstorms

Answer 54

Cumulus Mature Dissipating

Question 55

How do you know a cloud left cumulus stage for mature

Answer 55

Rain starts, up and down drafts, has the most turbulence

Question 56

Typical conditions for a dry microburst to occur

Answer 56

Mid summer Between 11 am and 4 pm Produced from a cumulus cloud, Has a Virga (ring of dust)

Question 57

OWS FREEZING LEVEL CHART IS IN WHAT?

Answer 57

Thousands! 16 is read as 16,000

Question 58

First source for planning DOD flight

Answer 58

Local weather