Test 8, Chapter 8

Question 1

considered a high-level cloud.

Answer 1

cirrostratus

Question 2

considered a mid-level cloud.

Answer 2

nimbostratus

Question 3

cooling air becomes saturated at a temperature called the

Answer 3

dew point

Question 4

what type of drought occurs when precipitation cannot supply enough moisture to the ground to support an area’s crops?

Answer 4

agricultural drought

Question 5

what type of drought is based on a water shortage’s effect on people?

Answer 5

socioeconomic drought

Question 6

which type of cloud forms a flat, gray layer of heavy clouds not far above the ground?

Answer 6

stratus

Question 7

which type of front forms when a warm air mass moves into a region occupied by a cold air mass

Answer 7

warm front

Question 8

which type of front forms a Y shape

Answer 8

occluded front

Question 9

precipitation made of ice crystals that fall to the ground is called

Answer 9

snow

Question 10

which type of air mass brings cool, wet weather

Answer 10

maritime polar

Question 11

which type of air mass brings warm, moist weather

Answer 11

maritime tropical

Question 12

the process of a liquid becoming a gas is

Answer 12

evaporation

Question 13

when the temperature of air rises, relative humidity will

Answer 13

decrease

Question 14

the year-round atmospheric conditions typical of a certain place are its

Answer 14

climate

Question 15

the movement of water from the earth’s surface, into the air, and back to the surface is the ____ cycle.

Answer 15

water

Question 16

an almond-shaped cloud is a

Answer 16

lenticular cloud

Question 17

An ____ air mass brings very cold and dry weather

Answer 17

arctic

Question 18

a low that forms along a front is called a

Answer 18

frontal cyclone

Question 19

which type of front forms when two air masses push against each other but neither advances?

Answer 19

stationary

Question 20

what is a mixture of smoke and fog called

Answer 20

smog

Question 21

what is the amount of water vapor in the air called

Answer 21

humidity

Question 22

what phenomenon occurs when an area receives an abnormally low amount of precipitation over a long period

Answer 22

drought

Question 23

what is rain that freezes before it hits the ground

Answer 23

sleet

Question 24

what is the study of weather and of the atmospheric conditions that produce weather

Answer 24

meteorology

Question 25

what phenomenon occurs when an air mass remains stationary over a region for a long time

Answer 25

air-mass weather

Question 26

list the 3 factors that affect the density of an air mass

Answer 26

temperature, humidity, pressure

Question 27

a substance going from a solid to a liquid is

Answer 27

melting

Question 28

water vapor in the air that touches the ground and turns to ice is

Answer 28

frost

Question 29

water vapor in the air that touches the cooler ground and turns to a liquid is

Answer 29

dew

Question 30

ice crystals in clouds that grow large enough to fall to the ground are

Answer 30

snowflakes

Question 31

layered balls of ice are called

Answer 31

hailstones

Question 32

white, billowy clouds that resemble piles of cotton puffs are

Answer 32

cumulus

Question 33

what type of fog is found along the slopes of mountains

Answer 33

upslope fog

Question 34

drops of liquid water that have a diameter of 0.5 millimeter or greater and fall from the clouds to Earth are called

Answer 34

rain

Question 35

snowflakes with white, feathery branches forming a leaf-or star-shaped pattern are

Answer 35

dendrites

Question 36

air that is completely full of water vapor and can hold no more is considered

Answer 36

saturated

Question 37

the most frequent type of cloud is the

Answer 37

stratocumulus

Question 38

Which of the following is true?
A cloud forms when a body of rising air reaches the dew point.
Clouds consist of tiny ice crystals or droplets of liquid water.
Most clouds result from adiabatic cooling of moist air.

Answer 38

all of them are true

Question 39

The ratio comparing the actual humidity to the humidity of saturated air under the same conditions is

Answer 39

relative humidity

Question 40

A large body of air with relatively uniform properties is an

Answer 40

air mass

Question 41

Airborne water vapor cannot turn into liquid without a small particle called a

Answer 41

condensation nucleus

Question 42

The 3 major factors that determine the earth’s weather are

Answer 42

heat energy, uneven distribution of heat energy, and water vapor

Question 43

A thick, brownish haze that results from complex molecules released into the air by vehicles and some factories and plants is

Answer 43

photochemical smog

Question 44

List & explain the 2 processes that form rain.

Answer 44

Bergeron process (cold-cloud) - water vapor in portions of a cloud below freezing crystallizes around freezing nuclei.  The ice crystals absorb water vapor from the cloud and stick to each othr, growing large enough to be snowflakes.  The snowflakes fall through the cloud, melting in warmer air near the ground to form rain.
Collision-coalescence process - larger-than-normal condensation nuclei in regions of the cloud above freezing cause the formation of giant cloud droplets, which grow larger by colliding with smaller droplets.  When they become too big to remain suspended in the air, the droplets fall to the earth as rain.