Aviation Weather

Question 1

All weather occurs in what layer

Answer 1

Troposphere

Question 2

Atmospheric pressure is measured using either an aneroid barometer or an_____________ barometer

Answer 2

Mercurial

Question 3

What are two basic units used to measure and report atmospheric pressure

Answer 3

Inches of mercury and millibars

Question 4

When an aircraft flying below 18,000 ft flies from high pressure area Into a low pressure area and the altimeter is not corrected , the altimeter reading will be …

Answer 4

To high

Question 5

An aircraft is flying above 18,000 ft what should the altimeter be ?

Answer 5

The standard atmospheric pressure

Question 6

When an aircraft flying below 18,000 feet flies from a low temperature area into a high temperature area and the altimeter is not corrected the reading will be ?

Answer 6

Too low

Question 7

What type of cloud appears as white wisps against they sky

Answer 7

Cirrus

Question 8

What type of cloud appears as a smooth , thin layered cloud covering all or most of the sky , giving the sky a milky appearance

Answer 8

Cirrostratus

Question 9

What type of cloud appears as thick grey or blue grey overcast

Answer 9

Alto stratus

Question 10

What type of cloud resembles maintains or towers

Answer 10

Cumulonimbus

Question 11

A front /whose motion is such that cold air displaces warm air at the surface is called an

Answer 11

Cold front

Question 12

A front that has little to no motions is called

Answer 12

Stationary front

Question 13

What is the difference in temperature and Dew point

Answer 13

Dew point depression

Question 14

Which type of fog is the most common problem for air traffic control

Answer 14

Radiation fog

Question 15

Which is considered the most serious of the fours types of airframe ice

Answer 15

Clear

Question 16

Which type of airframe ice forms as each super cooled water droplet that strikes the airfoil freezes completely before another droplet strikes in the same place

Answer 16

Rime

Question 17

Which type of turbulence occurred because of surface heating

Answer 17

Thermal

Question 18

Which type of turbulence is caused by a severe change in either wind speed or wind direction

Answer 18

Low level wind shear

Question 19

Which of the following terms is frequently used by pilots to report turbulence characterized by rhythmic bumpiness with little attitude change

Answer 19

Light or moderate chop

Question 20

How often are speci weather observations issued

Answer 20

When a significant change in the weather occurs between the top of the hour and 44 mins past the hour

Question 21

In the sky condition weather group of a weather observation sky cover 2/8s would be classified as which of the following

Answer 21

Few

Question 22

Which of the following codes means ice on Rwy , no decelerometer reading available

Answer 22

IR //

Question 23

What type of weather forecast is issued by the NWS for specific locations

Answer 23

TAF

Question 24

Which military wind condition is issued when non thunderstorm winds are sustained between 18 and 33 KTS or numerous gusts equal or greater than 24 KTS are expected within 12 hours

Answer 24

High wind condition 1

Question 25

Which tropical cyclone condition is set when destructive winds are possible within 24 hours

Answer 25

Condition 2

Question 26

The atmosphere of the earth is comprised of how many basic layers

Answer 26

Five

Question 27

The mesosphere extends upward front the stratosphere to approximately

Answer 27

50 miles

Question 28

What is the standard sea level pressure of mercury in inches

Answer 28

2992

Question 29

Why is it important for an aircraft to have correct altimeter setting for the area in which it is flying

Answer 29

For safety . Altitude and vertical separation are based on these settings

Question 30

If the pressure changes by 1 inch of mercury and the aircrafts altimeter is not corrected , the altimeter error will be________ft

Answer 30

1000

Question 31

What would the altimeter read when a n aircraft flies from high temperature area into a low temperature area and the altimeter is not corrected

Answer 31

Too high

Question 32

Clouds form when the temperature of the surrounding air is between 5 degrees F and

Answer 32

32 degrees

Question 33

For a cloud to be composed almost entirely of ice crystals, the temperature of the surrounding air must be below what specific temperature

Answer 33

5F

Question 34

What type of cloud appears like fleecy flakes or small white cotton balls

Answer 34

Cirrocumulus

Question 35

What type of cloud appears similar to a herd of sheep in the sky

Answer 35

Altocumulus

Question 36

What type of cloud is thick and dark gray but formless in appearance

Answer 36

Nimbostratus

Question 37

What type of cloud has fairly poor visibility and is marked by thick rolls and dark rounded masses underneath

Answer 37

Stratocumulus

Question 38

What type of cloud appears flat shapeless and dull gray , precipitation is in the form of drizzle only

Answer 38

Stratus

Question 39

What type of cloud appears dense with vertical development

Answer 39

Cumulus

Question 40

What type of cloud is large and bag like with protuberance , like udders or punches on the undersurface

Answer 40

Cumulonimbus mammatus

Question 41

What type of cloud has the shape of a lens or almond

Answer 41

Lenticular

Question 42

A what type of cloud may extend higher than 60,000 ft and resembles an anvil

Answer 42

Cumulonimbus

Question 43

When air stagnates over certain areas , it acquires the properties from what region

Answer 43

The source region

Question 44

When two different air masses meet what weather term refers to the boundary the sow rates the masses

Answer 44

Front

Question 45

A front whose motion is such that warm air replaces cold air at the surface is called a

Answer 45

Warm front

Question 46

A complex front resulting when a surface cold front overtakes a warm front is called a

Answer 46

Occluded front

Question 47

Which of the following best defines dew point

Answer 47

The temperature at which air constant pressure and water vapor content must be cooled for saturation to occur

Question 48

Fog seldom forms when dew point spread is

Answer 48

Greater then 4 degrees

Question 49

Which type of fog is the most dangerous to aviation

Answer 49

Advection fog

Question 50

Which type of fog forms when air if forced to ascend a gradual slope

Answer 50

Upslope fog

Question 51

Which type of fog forms when cold air moves over warm water

Answer 51

Steam fog

Question 52

Heaviest airframe icing generally occurs within the temperature range of ______________ provided moisture is available

Answer 52

15 -32 degrees

Question 53

All of the following conditions produce a liquid film of water on aircraft favorable to the formation of clear ice

Answer 53

Large water droplets , large number of cloud droplets , temps above freezing

Question 54

All of the following conditions favor the formation of rime ice except

Answer 54

Very small water droplets , temperatures far below freezing

Question 55

Which type of natural turbulence is caused by lifting of warm air by moving cold fronts

Answer 55

Thermal

Question 56

Which type of natural turbulence is caused when wind flow is disturbed and transformed into irregular movements

Answer 56

Mechanical

Question 57

Turbulence that causes abrupt changes in altitude and or attitude Wouk be classified as

Answer 57

Severe

Question 58

Turbulence that causes the aircraft to be tossed about violently practically out of control would be classified as what

Answer 58

Extreme

Question 59

Turbulence that results in slight , momentary changes in altitude and or attitude would be classified as

Answer 59

Light