6

Question 1

Absolute instabilty results when the environmental lapse rate is ______ than the ___ adiabatic rate.

Answer 1

Greater, Dry

Question 2

The dry adiabatic rate is the rate at which

Answer 2

Temperature changes in a rising or descending parcel of unsaturated air.

Question 3

Which environmental lapse rate represents the most unstable atmosphere in a layer of unsaturated air?

Answer 3

11 degrees Celsius per 1,000 m

Question 4

If an air parcel is given a small push upward and it continues to move upwards on its own accord, the atmosphere is said to be: ____

Answer 4

Unstable

Question 5

Inversions that form as air slowly sinks over a large area are called:

Answer 5

Subside inversions.

Question 6

If the environmental lapse rate is less than the moist adiabatic, the atmosphere is ________

Answer 6

Absolutely Stable

Question 7

An afternoon sky full of cumulus humilis clouds with little verticals growth indicates ____ weather

Answer 7

Fair

Question 8

A rising parcel of air that does not exchange heat with its surroundings is an example of :

Answer 8

An adiabatic process

Question 9

T/F: The atmosphere is normally most stable in the late afternoon and most unstable in the early morning.

Answer 9

False

Question 10

The rate at which the temperature changes inside descending (or rising) parcel of saturated air is called _______ rate

Answer 10

Moist adiabatic

Question 11

An air parcel in an unstable atmosphere has an _____-_____ force acting on it.

Answer 11

Upward-Directed

Question 12

T/F: Subsidence has no effect on atmospheric stability.

Answer 12

False

Question 13

T/F: the environmental lapse rate is almost always the same as the adiabatic rate

Answer 13

False XXXX

Question 14

AN inversion represents an extremely stable atmosphere because air that rises into the inversion will eventually become ______ (temp) and more dense than/as the surrounding air.

Answer 14

Colder

Question 15

Inversions that form as air slowly sinks over a large area are called ____ inversions. They. Sometimes occur at the surface, but more frequently, they are observed aloft and are often associated with large high-pressure area because of the sinking air motions associated with these systems.

Answer 15

Subsidence

Question 16

T/F: The combination of warming the surface and warming the air aloft we creates the greatest atmospheric stability.

Answer 16

False

Question 17

T/F: Sinking air sometimes cools adiabatically

Answer 17

False

Question 18

Which cloud type would most likely form in an unstable atmosphere?

Answer 18

Cumulonimbus

Question 19

In all seasons, the largest amount of latent heat gets released in a _____ parcel of ____ saturated air.

Answer 19

Rising, Warm

Question 20

Which condition would be described as the most stable independent of the season or the location on Earth?

Answer 20

An inversion

Question 21

Which of the following is not a mechanism primarily responsible for most clouds observed?

Answer 21

Difference in air pressure caused by a rapidly increasing moist adiabatic rate in a thermal.

Question 22

T/F: The atmosphere is normally the most stable in the early mornings and most unstable in the afternoons

Answer 22

True

Question 23

In a conditionally stable atmosphere, the environmental lapse rate will be greater than the moist adiabatic rate and __________ the dry adiabatic rate.

Answer 23

Less than <

Question 24

T/F: warm saturated air produces more liquid water than cold saturated air

Answer 24

True

Question 25

T/F: a rising parcel of air expands and cools, whereas a sinking parcel compresses and warms

Answer 25

True

Question 26

T/F: A conditionally unstable atmosphere is stable with respect to unsaturated air and unstable with respect to saturated air

Answer 26

True

Question 27

Most thunderstorms do not extend very far into the stratosphere because the air in the stratosphere is _____

Answer 27

Stable

Question 28

Altocumulus clouds that show verticals development and produce tower-like extensions are called?

Answer 28

Altocumulus Castellanus

Question 29

Air that _____ vertical displacement is considered to be stable

Answer 29

Resists

Question 30

What is a condition in which the environmental lapse rate is equal to the dry adiabatic rate?

Answer 30

Neutral stability

Question 31

A small volume of air is referred to as a ?

Answer 31

Parcel of air

Question 32

What transfers heat upwards into the atmosphere?

Answer 32

Thermals

Question 33

If rising air cools to the dew-point , the relative humidity does what?

Answer 33

Becomes 100%

Question 34

The atmosphere is always absolutely stable when the _________________ is less than the moist adiabatic rate

Answer 34

Environmental lapse rate

Question 35

Rising air will eventually cool to its dew-point temperature. At that point, what is its relative humidity?

Answer 35

100

Question 36

If the environmental lapse rate is less than the moist adiabatic rate, the atmosphere is ______

Answer 36

Absolutely stable

Question 37

Conditional instability occurs whenever the:

Answer 37

environmental lapse rate is between the moist adiabatic rate and the dry adiabatic rate.

Question 38

For a layer of altostratus clouds to change into altocumulus it is necessary for the :

Answer 38

Top part of the cloud deck to cool while the bottom part warms

Question 39

The rate at which the actual air temperature changes with increasing height above the surface is referred to as the ___________ rate

Answer 39

Environmental lapse

Question 40

T/F: Rain shadows do not form on the leeward side of mountains.

Answer 40

False

Question 41

If an air parcel is given a small push upwards and continues to move upwards on its own accord, the atmosphere is said to be _____

Answer 41

Unstable

Question 42

T/F: Sinking air sometimes cools adiabatically

Answer 42

False

Question 43

Force lifting along a topographic barrier is called:

Answer 43

Orthographic uplift

Question 44

T/F: The temperature of rising air at a given level inside a cumulus cloud is normally warmer than the air around the cloud.

Answer 44

True

Question 45

AN example of orthographic clouds would be clouds

Answer 45

Forming on the windward slope of a mountain

Question 46

Conditionally instability depends on the condition of ______.

Answer 46

Saturation

Question 47

Elevation where clouds form is called the _______ level.

Answer 47

Condensation