Weather Theory

Question 1

primary characristic of the Troposphere

Answer 1

in temperature laspe rate

Question 2

troposphere is thickest at the

Answer 2

equator

Question 3

acerage thickness of the troposphere in the mid latitudes

Answer 3

36000’

Question 4

wind speed decreases with altitude in the

Answer 4

stratosphere

Question 5

primary characteristic of the tropopause

Answer 5

an abrubt change in temperature lapse rate

Question 6

average depth of the trop

Answer 6

no more than a few 1000’/varies

Question 7

max wind speed normally occur in the

Answer 7

trop level

Question 8

largest atmospheric layer

Answer 8

stratosphere

Question 9

primary characteristics of the stratosphere

Answer 9

primarily isothermal

Question 10

the trop height with increased temps

Answer 10

increases

Question 11

ISA stands for

Answer 11

International Standard Atmosphere

Question 12

Average ISA temps

Answer 12

15C and 59F

Question 13

Average sea level pressure

Answer 13

1013.2mb and 29.92hg

Question 14

air density. woth increased temps

Answer 14

decreases

Question 15

air pressure with increased altitude

Answer 15

increases

Question 16

Freezing Level def

Answer 16

altitude at which temp is 0C

Question 17

what is a temp lapse rate

Answer 17

decrease in temp/ increase of altitude

Question 18

average temp lapse rate in troposphere

Answer 18

2C/1000’

Question 19

ISA+10C

Answer 19

Decrease air density and aircraft preformance

Question 20

inversion definition

Answer 20

inverted temperature lapse rate

Question 21

Inversion hazards

Answer 21

Icing, Turublance, and poor visability

Question 22

Station pressure code

Answer 22

QFE

Question 23

station pressure is the

Answer 23

actual pressure at field

Question 24

Local altimeter setting is

Answer 24

QNH

Question 25

normal pressure lapse rate is

Answer 25

1 inch hg/1000’ up to 10,000’ MSL

Question 26

pressure lapse rate above 10,000’ MSL

Answer 26

slows to less than 1in hg/1,000’

Question 27

pressure drops faster in

Answer 27

colder air

Question 28

Define True Altitude

Answer 28

actual altitude above MSL

Question 29

Define Absolute Altitude

Answer 29

Actual altitude above terrian

Question 30

Define Indicated Altitude

Answer 30

altitude above MSLl indicated on altimeter when using local altimeter setting

Question 31

indicated altitude is normally used below

Answer 31

18,000’ MSL

Question 32

High to low pressure
TA is IA

Answer 32

less than

Question 33

Low to High pressure
TA. IA

Answer 33

larger than

Question 34

Define Pressure Altitude

Answer 34

indicated altitude when using 29.92hg as the setting

Question 35

lower pressure results in a. pressure altitude

Answer 35

higher

Question 36

Aircraft have PA limits for. and.

Answer 36

takeoff
Landing

Question 37

Define Density Altitude

Answer 37

Pressure Altitude corrected for non-standard temperature

Question 38

isobar is a line of

Answer 38

equal pressure

Question 39

Dewpoint Definition

Answer 39

the temp to which air must be cooled to become fully saturated

Question 40

IFR

Answer 40

C less than 1000’
and or
V less than 3sm

Question 41

3 conditions for mountain wave

Answer 41

wind speeds at or above 30-40kts
winds blowing perpendicular to the mountains
stable air

Question 42

Realitive humidity def

Answer 42

the ratio of water vapor in air compared to the total amount of water vapor that air can hold

Question 43

Air mass definition

Answer 43

a body of air with uniform temperature and moisture

Question 44

front def

Answer 44

the boundry between two air masses