chapter 7: clouds

Question 1

The result of condensation may be

Answer 1

fog, dew or clouds

Question 2

The conditions of formation of condensation are:

Answer 2

1. air must be saturated
2. there are generally must be a surface on which the water vapor can condense.
3. ascent of air

Question 3

for any form of condensation the must be saturated. Saturation occurs when

Answer 3

the air is cooled below its dew point or

when sufficient water vapor is added to the air

Question 4

there are generally must be a surface on which the water vapor can condense. This surface may be

Answer 4

an object at or near the ground where dew can form, or suspended particles in the atmosphere

Question 5

This surface may be an object at or near the ground where dew can form, or suspended particles in the atmosphere (known as

Answer 5

condensation nuclei

Question 6

define condensation nuclei

Answer 6

serve as surface on which water vapor condenses

Question 7

fog forms near …………………….. and cloud at ………………….

Answer 7

the ground and clouds at a height

Question 8

Condensation nuclei may be

Answer 8

dust, smoke and salt particles all of which are suspended in the atmosphere.

Question 9

hygroscopics:

Answer 9

Particles that make the most effective cloud condensation nuclei

Question 10

Particles that make the most effective cloud condensation nuclei are called hygroscopics which means

Answer 10

they are water-absorbent.

Question 11

……………………………….. are also hygroscopics

Answer 11

Some familiar food items, such cracks and cereal

Question 12

Some of the most common hygroscopic nuclei are

Answer 12

minute crystals of sulfate and nitrate compounds.

Question 13

Hygroscopic nuclei are produced into the atmosphere by

Answer 13

burning (forest fires, automobiles and coal burning).

In addition salt from breaking ocean waves and

some particles found in ordinary dust can serve as cloud condensation nuclei

Question 14

The important cloud-formation is the ascent of air. As a result,

Answer 14

, rising air expands and is cooled adiabatically. At a height called the lifting condensation level, the ascending parcel is cooled to its dew point temperature and further ascent causes condensation.

Question 15

Clouds are one form of

Answer 15

condensation

Question 16

Clouds are one form of condensation. They are best described as

Answer 16

visible aggregates of minute droplets of water or tiny crystals of ice.

Question 17

Clouds are classified on the basic of two criteria

Answer 17

form and height

Question 18

By form clouds are classified into:

Answer 18

1. Cirrus: this type of cloud is formed at high altitudes, has a shape of thin white and often wispy. Cirrus clouds are composed of ice crystals that originate from the freezing of supercooled water droplets. Cirrus generally occur in fair weather and point in the direction of air movement at their elevation.
2. Cumulus: clouds which they consist of globular individual cloud masses that sometimes look like pieces of floating cotton. The base of each cloud is often flat and may be only 1000 meters (3300 feet) above the ground. The top of the cloud has rounded towers and domes.
3. Stratus: Stratus clouds are best described as sheets or layers (strata) that cover much or all of the sky.

Question 19

By height clouds are classified into four basic types:

Answer 19

1. High clouds.
2. Middle clouds.
3. Low clouds.
4. Vertical development clouds

Question 20

High clouds are the family of

Answer 20

cirriform clouds:

cirrus, cirrostratus and cirrocumulus clouds.

Question 21

High clouds are normally have bases

Answer 21

above 6000m

Question 22

Middle clouds have the prefix

Answer 22

alto

Question 23

Middle clouds have the prefix alto as apart of name;

Answer 23

altostratus (As) and altocumulus (Ac)

Question 24

Middle clouds base height

Answer 24

between 2000-6000 m

Question 25

Low clouds are a family of

Answer 25

stratiform clouds;

stratus (St), stratocumulus (Sc) and nimbostratus (Ns)

Question 26

Low clouds base height

Answer 26

below 2000 m

Question 27

Nimbostratus clouds derive their name from

Answer 27

the Latin nimbus (rainy clouds) and stratus (to cover with a layer).

Question 28

Nimbostratus is one of the

Answer 28

chief precipitation producers

Question 29

Vertical development clouds associated with

Answer 29

unstable air

Question 30

Unstable air forms

Answer 30

updrafts (convection)

Question 31

Unstable air forms updrafts (convection), which produces

Answer 31

a type of clouds that extends vertically such as tower or dome

Question 32

Unstable air forms updrafts (convection), which produces a type of clouds that extends vertically such as tower or dome. This type is a form of

Answer 32

cumulus (Cu) clouds (cumulus and cumulonimbus)

Question 33

Cumulonimbus (Cb) is a cloud of

Answer 33

hazard weather such as thunderstorms, showers, turbulence

Question 34

1, 2, 3

Answer 34

Question 35

4, 5, 6

Answer 35

Question 36

7, 8, 9

Answer 36

Question 37

10, 11

Answer 37