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Flashcards in JX101 Deck (24)
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1

What is the stratosphere characterized by?

Smooth flying conditions and excellent visibility

2

What is the standard sea level temperature in degrees Celsius (° C)?

15

3

With a pressure change of 1.0 in – Hg, how many feet will the altimeter reading change?

1000

4

If the air is colder than the standard atmosphere, the aircraft will be ______ than the altimeter indicates?

Lower

5

What is the initiating force for all winds?

Pressure gradient force

6

Low pressure results from ascending/descending air?

Ascending

7

The jet stream is the narrow band of strong winds where are they found?

Below the tropopause

8

What type of clouds contain numerous hazards such as severe to extreme turbulence, hail, icing, and lightning?

Cumulonimbus

9

Three forms of precipitation are ?

Drizzle, rain, frozen

10

The four methods of atmospheric lifting are?

convergence, frontal, thermal, and orographic

11

Air that after being lifted has the same temperature as the surrounding air, is called?

Neutrally stable air

12

A weak pressure gradient force would be indicated by a wide/narrow isobar spacing?

Wide

13

A condition where the air temperature aloft is higher than that of the lower atmosphere is generally referred to as what?

A temperature inversion

14

The forces that determine the wind direction in the atmosphere are weakened at the Earth’s surface by what?

The force of friction

15

What is The height of an aircraft above the ground known as?

Absolute/true

16

What do you call air when it contains the maximum moisture possible for a given temperature?

Saturated

17

The decrease in atmospheric temperature with increasing altitude is called what?

Lapse rate

18

What reduces the speed of the wind below 2000 feet AGL?

Friction

19

Standard sea level pressure is what?

1013.2 mb or 29.92 in HG

20

Names of middle clouds contain what prefix?

Alto

21

What is the standard temperature lapse rate of the atmosphere in °Celsius per 1000 feet?

2.0

22

Lifted air that is warmer than surrounding air continues to rise and indicates what?

An unstable condition

23

For every 11° C the temperature varies from the standard, how big will the altimeter error be?

4 %

24

In which atmospheric layer does weather normally occur?

Troposphere