Atmospheric Structure and Mechanics

Question 1

In which atmospheric layer does weather normally occur?

Answer 1

Troposphere

Question 2

The stratosphere is characterized by smooth flying conditions and excellent ______.

Answer 2

Visibility

Question 3

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

Answer 3

15°

Question 4

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

Answer 4

1000

Question 5

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

Answer 5

Lower

Question 6

What is the initiating force for all winds?

Answer 6

Pressure gradient force

Question 7

Low pressure results from ______ air.

Answer 7

Ascending

Question 8

The jet stream is the narrow band of strong winds found below the ______.

Answer 8

Tropopause

Question 9

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

Answer 9

Cumulonimbus

Question 10

Three forms of precipitation are ______, ______, and ______.

Answer 10

Drizzle, rain, frozen

Question 11

The four methods of atmospheric lifting are convergence, frontal, thermal, and ______.

Answer 11

Orographic

Question 12

______ defines air with the same temperature as the surrounding air after being lifted.

Answer 12

Neutrally stable

Question 13

A weak pressure gradient force would be indicated by a ______ isobar spacing?

Answer 13

Wide

Question 14

A condition where the air temperature aloft is higher than that of the lower atmosphere is generally referred to as a temperature ______.

Answer 14

Inversion

Question 15

The forces that determine the wind direction in the atmosphere are weakened at the Earth’s surface by the force of ______.

Answer 15

Friction

Question 16

The height of an aircraft above the ground is known as _____ altitude.

Answer 16

Absolute

Question 17

Air is ______ when it contains the maximum moisture possible for a given temperature.

Answer 17

Saturated

Question 18

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

Answer 18

Lapse rate

Question 19

Below 2000 feet AGL, ______ reduces the speed of the wind.

Answer 19

Friction

Question 20

Standard sea level pressure is 1013.2 mb or ______ in Hg.

Answer 20

29.92

Question 21

Names of middle clouds contain the prefix ______.

Answer 21

Alto-

Question 22

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

Answer 22

2.0

Question 23

Lifted air that is warmer than surrounding air continues to rise and indicates a(n) ______ condition.

Answer 23

Unstable

Question 24

For every 11° C the temperature varies from the standard, there will be a ______% altimeter error.

Answer 24

4