Met

Question 1

What is air doing in a high pressure system

Answer 1

out and down

Question 2

what is air doing in a low pressure system

Answer 2

inward and rising

Question 3

what does the wind do during the day (diurnal variation)?

Answer 3

speeds, veers, gusts

Question 4

What is the dry adiabatic lapse rate, and what does it do sinking vs. rising?

Answer 4

3 degrees per 1,000 ft
sinks = compresses (warms)
rises = expands (cools)

Question 5

what type of precip is above ice pellets

Answer 5

freezing rain

Question 6

features of stable air

Answer 6

smooth flying
steady precip
layer cloud
shallow lapse rate
inversion

Question 7

features of unstable air

Answer 7

bumpy flying
showery precip
cumulus clouds
steep lapse rate

Question 8

ways to cause surface heating

Answer 8

radiation
convection
advection
conduction

Question 9

what are the keys for thunderstorm development? (3)

Answer 9

high moisture content, steep lapse rate, lifting agent

Question 10

is freezing reported in ASL or AGL

Answer 10

ASL

Question 11

what is deviation in a magnetic compass caused by?

Answer 11

electromagnetic field associated with metal in airframe and engine

Question 12

what causes every single type of weather, or accompanies it

Answer 12

heat exchange

Question 13

average height of troposphere over equator

Answer 13

54,000ft

Question 14

lapse rate

Answer 14

1.98 degrees per 1,000ft

Question 15

isobar spacing

Answer 15

4 millibars

Question 16

when a gas becomes a solid

Answer 16

deposition

Question 17

when a solid becomes a gas

Answer 17

sublimation

Question 18

saturated lapse rate

Answer 18

1.5 degrees per 1,000ft

Question 19

how are clouds grouped

Answer 19

height and vertical displacement

Question 20

what will happen to pressure as a cold front passes

Answer 20

sharp rise

Question 21

when crossing cold front, how should heading be corrected

Answer 21

to the right

Question 22

slope of front surfaces

Answer 22

.5 to 1.5

Question 23

what is the movement of a front controlled by

Answer 23

the movement of cold air

Question 24

maritime polar airmass characteristics

Answer 24

cold, moist, unstable, mid level tropopause

Question 25

clouds that will form as cold front passes over

Answer 25

cumulonimbus, nimbostratus, altostratus, cirrus

Question 26

vis before cold front passage

Answer 26

very poor, haze

Question 27

advection fog

Answer 27

air mass moving inland from coastline moist air moving over colder surface

Question 28

clouds that tend to funnel

Answer 28

cumulonimbus mammatus

Question 29

what will frost on upper wing cause

Answer 29

stall at angle of attack lower than normal

Question 30

when does clear ice accumulate most rapidly

Answer 30

0 to -10 degrees cumuliform clouds

Question 31

what is associated with cumulus stage of thunderstorm

Answer 31

updrafts

Question 32

when are strongest mountain waves formed

Answer 32

when wind is flowing at right angle to range in stable air

Question 33

when airframe icing occurs

Answer 33

flying through visible moisture, supercooled water droplets hit, at or below freezing

Question 34

how long is GFA valid for?

Answer 34

12 hours with additional 12 hour categorical outlook

Question 35

when is wind VRB

Answer 35

3kt or less

Question 36

what pressure level is 700hPa chart approximate to?

Answer 36

10,000ft ASL

Question 37

radius of TAF

Answer 37

5NM from centre of runway complex

Question 38

where to find freezing level

Answer 38

GFA

Question 39

what is found in AIRMET

Answer 39

instrument meteorological conditions

Question 40

what is MVFR in IFR outlook chart

Answer 40

1,000 to 3,000ft AGL ceiling, and/or vis 3-5NM

Question 41

values for winds aloft forecast

Answer 41

knots and true

Question 42

9900+00 for 9,000ft in FD

Answer 42

light and variable winds less than 5 kts

Question 43

virga

Answer 43

associated with thunderstorms strong downdrafts and microbursts

Question 44

adiabatic process

Answer 44

heating or cooling without adding or removing heat from system

Question 45

when do jet streams form more readily

Answer 45

strong horizontal temp gradient and abrupt tropopause height

Question 46

weather you would expected when approaching a trowal

Answer 46

widespread clouds and precip, possible lines of thunderstorms

Question 47

what altitude is 500hPa chart at

Answer 47

18,000 ft ASL

Question 48

what clouds will be seen flying from cold to warm in a cold front

Answer 48

CB, TCU, CU

Question 49

why is saturated lapse rate lower

Answer 49

energy given off during condensation/deposition

Question 50

orographic lift

Answer 50

air forced up by mountains

Question 51

what does coriolis force do to wind

Answer 51

deflects wind to the right in the northern hemisphere

Question 52

katabatic winds

Answer 52

flow down the side of mountains during night

Question 53

where is orographic lift turbulence most likely to occur

Answer 53

valley bottom

Question 54

summer air masses in Canada

Answer 54

mP and mT

Question 55

signs of approaching warm fronts

Answer 55

ceiling gradually falls and pressure drops

Question 56

weather code for hail

Answer 56

GR

Question 57

what does freezing rain indicate the presence of?

Answer 57

warm air aloft

Question 58

pressure altitude

Answer 58

altitude at which a given pressure is found in the standard atmosphere

Question 59

location of jet stream in summer

Answer 59

farther north (weaker)

Question 60

embedded thunderstorms

Answer 60

hidden in cloud

Question 61

which direct of flow are jet streams greater

Answer 61

west to east

Question 62

wind shear in thousands of feet indicative of CAT

Answer 62

5

Question 63

when is absolute environmental stability achieved?

Answer 63

environmental lapse rate less than saturated lapse rate

Question 64

during passage of cold front winds will be

Answer 64

variable and gusty

Question 65

where do lenticular clouds form

Answer 65

on mountain wave crest

Question 66

what marks beginning of mature thunderstorm stage

Answer 66

precipitation reaching surface

Question 67

what angle to isobars does wind flow at 3000ft

Answer 67

parallel, zero degrees free from surface friction

Question 68

CAT is most severe where in regards to jet stream

Answer 68

above and on cold air side (left side when facing downwind)

Question 69

how long are AIRMETs valid for

Answer 69

4 hours

Question 70

when do low-level jets form

Answer 70

summer on cloudless nights

Question 71

col

Answer 71

region where 2 highs and 2 lows meet (neutral)