Question 1

What is the atmosphere described as?

Accepted Answer

An invisible ocean of air

Answer

A layer of gases above the earth

Answer

A visible ocean of air

Question 2

Why is weather a vital concern for pilots?

Accepted Answer

It presents hazards such as fog, ice formation, and thunderstorms

Answer

It determines the altitude of flight

Answer

It affects the weight of the aircraft

Question 3

What are the main components of the atmosphere?

Accepted Answer

78% nitrogen, 21% oxygen

Answer

50% nitrogen, 50% oxygen

Answer

78% oxygen, 21% nitrogen

Question 4

How much does a square inch column of air weigh at sea level?

Accepted Answer

14.7 lbs

Answer

10 lbs

Answer

20 lbs

Question 5

What are the principal properties of the atmosphere?

Accepted Answer

Mobility, expansion, and compression

Answer

Density, weight, and pressure

Answer

Temperature, humidity, and wind

Question 6

What happens to rising air as it expands?

Accepted Answer

It cools

Answer

It remains the same temperature

Answer

It heats up

Question 7

What is the lowest layer of the atmosphere?

Accepted Answer

Troposphere

Answer

Mesosphere

Answer

Stratosphere

Question 8

In which layer do meteorites typically burn up?

Accepted Answer

Mesosphere

Answer

Stratosphere

Answer

Thermosphere

Question 9

What is the mean sea level pressure in the ICAO standard atmosphere?

Accepted Answer

29.92 inches of mercury

Answer

30.00 inches of mercury

Answer

28.50 inches of mercury

Question 10

What is the rate of temperature decrease with altitude in the ICAO standard atmosphere?

Accepted Answer

1.98°C per 1,000 feet

Answer

1.5°C per 1,000 feet

Answer

2.5°C per 1,000 feet

Question 11

What are the four families of clouds?

Accepted Answer

High clouds, middle clouds, low clouds, and clouds of vertical development

Answer

High clouds, middle clouds, low clouds, and vertical clouds

Answer

Cirrus clouds, cumulus clouds, stratus clouds, and nimbus clouds

Question 12

What type of clouds form in rising air currents?

Accepted Answer

Cumulus clouds

Answer

Nimbus clouds

Answer

Stratus clouds

Question 13

What are high clouds composed of?

Accepted Answer

Ice crystals

Answer

Supercooled water droplets

Answer

Water droplets

Question 14

Which clouds are associated with thunderstorms?

Accepted Answer

Cumulonimbus clouds

Answer

Altostratus clouds

Answer

Cirrostratus clouds

Question 15

What is the sky condition when no clouds are present?

Accepted Answer

Clear

Answer

Few

Answer

Scattered

Question 16

What does "broken" sky condition refer to?

Accepted Answer

5 to 7 oktas of the celestial dome being covered

Answer

8 oktas of the celestial dome being covered

Answer

2 oktas of the celestial dome being covered

Question 17

What is the process by which water vapor changes into water droplets?

Accepted Answer

Condensation

Answer

Evaporation

Answer

Sublimation

Question 18

What type of lift occurs when air is forced upward by a range of hills or mountains?

Accepted Answer

Orographic lift

Answer

Frontal lift

Answer

Convection lift

Question 19

What instrument is used to measure atmospheric pressure?

Accepted Answer

Mercury barometer

Answer

Thermometer

Answer

Hygrometer

Question 20

What is the pressure equivalent of 29.92 inches of mercury?

Accepted Answer

1013.2 hectopascals

Answer

1000 hectopascals

Answer

1020 hectopascals

Question 21

What is station pressure?

Accepted Answer

The actual atmospheric pressure at the elevation of the observing station

Answer

The pressure at sea level

Answer

The pressure reduced to mean sea level

Question 22

What is the standard used for consistent records of atmospheric pressure?

Accepted Answer

Mean sea level pressure

Answer

Station pressure

Answer

Altimeter setting

Question 23

What are areas of low pressure called?

Accepted Answer

Cyclones or depressions

Answer

Anticyclones

Answer

Ridges

Question 24

What is a col?

Accepted Answer

A neutral region between two highs and two lows

Answer

A ridge of high pressure

Answer

A trough of low pressure

Question 25

What is the pressure gradient?

Accepted Answer

The rate of change of pressure over a given distance

Answer

The difference in pressure between two regions

Question 26

How does the Coriolis force deflect air in the Northern Hemisphere?

Accepted Answer

To the right

Answer

To the left

Answer

Straight upward

Question 27

What does Buys Ballot's Law state?

Accepted Answer

If you stand with your back to the wind, the low pressure area will be on your left side

Answer

If you stand with your back to the wind, the low pressure area will be on your right side

Answer

If you stand with your back to the wind, the high pressure area will be on your left side

Question 28

How does surface friction affect air movement across isobars?

Accepted Answer

It causes air to move at a slight angle inwards towards the center of lows

Answer

It causes air to move directly outward from highs

Answer

It causes air to move parallel to the isobars

Question 29

Over land, how much can surface friction deflect air movement?

Accepted Answer

Up to 40°

Answer

Up to 10°

Answer

Up to 20°

Question 30

What is the flow of air into an area called?

Accepted Answer

Convergence

Answer

Subsidence

Answer

Divergence

Question 31

What is the flow of air outward from a region called?

Accepted Answer

Divergence

Answer

Advection

Answer

Convergence

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