Fly D

Question 1

how is atmosphere pressure measured

Answer 1

barometer

Question 2

physiology

Answer 2

how your body/body parts work

Question 3

how high into atmosphere can humans still breathe

Answer 3

5 km

Question 4

hypoxia

Answer 4

insufficient supply of oxygen

Question 5

time-duration of useful consciousness (TUC)

Answer 5

the pilot can still make reasonable decisions.

Question 6

what are symptoms of hypoxia

Answer 6

• impared cognitive skills
• headache, dizziness
• peripheral vision fail
• unconsciousness
• death

Question 7

armstrong altitude/limit

Answer 7

your saliva boils because of the difference in body heat and higher altitude temperature

Question 8

what happens to aircraft when air is thinner

Answer 8

reduced ability to takeoff

Question 9

ideal gas law

Answer 9

density decreases when pressure decreases/temperature increases

Question 10

pressure altitude

Answer 10

altitude estimated from atmospheric pressure alone

Question 11

density altitude

Answer 11

the altitude the aircraft feels, regardless of how high its flying

Question 12

soaring

Answer 12

staying aloft due to atmospheric updrafts

Question 13

thermals

Answer 13

when sunlight heats the ground, the air touching the ground is warmed and rises

Question 14

convective boundary layer

Answer 14

layer of thermals, more polluted than clear air above

Question 15

cloud streets

Answer 15

cumulus clouds at the top of rows of thermals

Question 16

anabatic cumulus

Answer 16

clouds that form above anabatic winds

Question 17

anabatic winds

Answer 17

warm updrafts along mountain slopes

Question 18

valley wind

Answer 18

wind blowing upstream in a valley

Question 19

orographic thunderstorms

Answer 19

mountain-related thunderstorms

Question 20

Clear-air turbulence (CAT)

Answer 20

windshear turbulence outside of thunderstorm cloud

Question 21

jet stream

Answer 21

rough winds at 6-12 km altitude

Question 22

K-H waves

Answer 22

wind shear across statically stable region

Question 23

billow clouds

Answer 23

strips of clouds (Fluctus)

Question 24

downburst

Answer 24

rapidly descending downdrafts

Question 25

virga

Answer 25

precipitation that evaporates before hitting the ground

Question 26

buoyancy force

Answer 26

rain-cooled air sinking under hot air rising

Question 27

microburst

Answer 27

short but damaging downbursts

Question 28

outflow winds

Answer 28

air spreads out in horizontal directions away from impact point

Question 29

gust front

Answer 29

leading edge of outrushing winds

Question 30

low-level wind shear

Answer 30

sudden change of windspeed direction

Question 31

arc cloud

Answer 31

low-altitude cloud caused by moisture hit by gust front

Question 32

glideslope

Answer 32

descending path toward the runway

Question 33

holding pattern

Answer 33

area pilots fly if they have to wait to land

Question 34

lightning

Answer 34

long spark

Question 35

where can a lightning stroke occur

Answer 35

- between cloud and ground - between adjacent clouds - within single cloud - between cloud and thin air

Question 36

graupel

Answer 36

small hailstones

Question 37

why does lightning form

Answer 37

collision of small ice crystals and graupel in a thunderstorm

Question 38

corona

Answer 38

discharging static electricity from extremities of aircraft

Question 39

hailstones

Answer 39

irregularly shaped balls of ice

Question 40

hail

Answer 40

hailstones falling from sky

Question 41

hail swath

Answer 41

damage on ground due to hailstorm

Question 42

terminal fall velocity

Answer 42

fall speed of hail increases with size

Question 43

hail shaft

Answer 43

column of falling hailstones below cloud base

Question 44

is hail dangerous to aircraft

Answer 44

extremely

Question 45

tornadoes

Answer 45

violently rotating columns of air between thunderstorms

Question 46

cumulonimbus clouds

Answer 46

tornadoes

Question 47

funnel cloud

Answer 47

funnel of water condensation

Question 48

debris cloud

Answer 48

dirt and debris stirred up from ground

Question 49

what makes a tornado visible

Answer 49

funnel cloud and debris cloud

Question 50

what scale rates tornadoes

Answer 50

Enhanced Fujita scale