Meteorology 5

Front 1

The most common way for air to be cooled in order that a cloud may form is by

Back 1

rising and expanding

Front 2

The formation of raindrops by collision and coalescence of smaller cloud droplets is strongly influenced by

Back 2

electrical charges on the droplets

Front 3

Why do clouds represent a source of heat for the atmosphere?

Back 3

cloud formation releases latent heat to the air

Front 4

Clouds which have extensive vertical dimensions are

Back 4

cumulus

Front 5

The important difference between liquid droplets and ice crystals in a supercooled cloud is that ice crystals

Back 5

grow much more rapidly

Front 6

The cloud droplets in a cloud are formed by water vapor molecules and

Back 6

condensation nuclei

Front 7

Condensation nuclei may be formed from

Back 7

particles of dust, nitric acid, smoke from forest fires, salt crystals from the ocean...

Front 8

Dew is most likely to form on

Back 8

clear calm nights

Front 9

The conditions that persist along the West Coast of the U.S. that are conducive to fog formation are

Back 9

moist air moving over a cold surface

Front 10

Fog is usually a result of air having been

Back 10

cooled or moistened

Front 11

Clouds and precipitation form in the air primarily due to

Back 11

air being cooled as it rises

Front 12

A cloud that forms liquid droplets has a relative humidity of 100% with respect to the liquid droplets. If ice crystals form in this cloud, they will experience the cloud enviroment as having a relative humidity of

Back 12

more than 100%

Front 13

The process by which a cloud droplet first forms is

Back 13

condensation

Front 14

The water content or volume of a raindrop is approximately ______ times that of a typical cloud droplet.

Back 14

1 million

Front 15

Which of these is a mid-level cloud?

Back 15

none listed

Front 16

Which of these clouds is least likely to produce precipitation that reaches the ground?

Back 16

cirrostratus

Front 17

Super cooled water is water which is

Back 17

still liquid at temperatures below 0 degrees C

Front 18

The necessary conditions for hail formation include strong upward vertical motion and

Back 18

large numbers of supercooled droplets

Front 19

What is the basic reason why condensation is not very important in causing a cloud droplet to grow to raindrop size?

Back 19

condensation is too slow

Front 20

Why are high altitude clouds always so thin?

Back 20

very little water vapor is present

Front 21

Freezing rain(ice storm) or sleet occurs when

Back 21

upper air is warmand surface air is cold

Front 22

Clouds that form in air that is very stable will usually be

Back 22

stratus

Front 23

A cumulous cloud is recognized mainly by its

Back 23

obvious vertical dimension

Front 24

Clouds are classified and named according to their altitude and

Back 24

form or appearance

Front 25

The most important process for cloud formation in the atmosphere is

Back 25

cooling by expansion of the air

Front 26

The word "radiation" in the term radiation fog refers to

Back 26

radiant energy lost by the ground

Front 27

The raindrops that fall to earth from a _warm_ cloud contain about one million times the water in a typical cloud droplet. This growth from cloud droplet to raindrop occurs _mainly_ bc of

Back 27

collision and coalescence

Front 28

A cloud type that develops as a consequence of local convection is

Back 28

cumulus

Front 29

Dew point is the temperature at which water vapor in the air begins to condense. The temperature inside a cloud would therefore be

Back 29

about equal to the dew point

Front 30

Clouds, dew and frost all form because air has become saturated. This condition of saturation is USUALLY caused by

Back 30

the air being cooled

Front 31

The cloud form that is best described as sheets or layerrs that cover much or all of the sky is termed

Back 31

stratus

Front 32

Hail is most commonly assoiciated with

Back 32

cumulonimbus clouds

Front 33

A wintertime form of precipitation that consists of small ice particles is called

Back 33

none listed

Front 34

"Anvil head" is a term applied to

Back 34

cumulonimbus clouds

Front 35

This fog is found in valleys at night and in the early morning

Back 35

radiation fog

Front 36

When warm moist air moves over a cloud surface, ______ fog may result.

Back 36

advection

Front 37

This fog results from adiabatic cooling

Back 37

none listed

Front 38

Which one of the fogs listed below may be catagorized as an evaporation fog?

Back 38

steam fog

Front 39

Cloud seeding is used

Back 39

to produce precipitation, in hail suppression, to disperse fog, to disperse clouds...

Front 40

Hail suppression

Back 40

relies primarily on cloud seeding with silver iodide