Ch. 21 Quiz

Question 1

As lower air is warmed, the air ___.

Answer 1

rises

Question 2

a large body of air throughout which temperature and moisture content is similar

Answer 2

air mass

Question 3

air masses responsible for cool, dry air in northern summers

Answer 3

continental polar

Question 4

a weather system in which the air sinks and flows outward from a center of high pressure, that brings dry weather

Answer 4

an anticyclone

Question 5

A hurricane begins when warm, moist air rises rapidly and the moisture condenses, releasing energy in the form of ___.

Answer 5

latent heat

Question 6

What does radar use to determine the velocity and location of objects?

Answer 6

radio waves

Question 7

Scientists study upper-atmospheric conditions to ___.

Answer 7

track global weather patterns

Question 8

What tool do meteorologists use to solve mathematical equations and store data?

Answer 8

a computer

Question 9

Doppler radar and satellite images provide information to create ___.

Answer 9

station models

Question 10

What type of weather have meteorologists tried to control with freezing nuclei?

Answer 10

hurricanes

Question 11

Symbols communicate weather data in a ___.

Answer 11

station model

Question 12

What do the weather map symbols H and L indicate?

Answer 12

air-pressure centers

Question 13

lines on a weather map that connect points of equal atmospheric pressure

Answer 13

isobars

Question 14

a severe storm that develops over tropical oceans, whose strong winds spiral in toward the intense low-pressure center

Answer 14

hurricane

Question 15

an instrument used to measure wind speed

Answer 15

anemometer

Question 16

an air mass that originates in southern Atlantic and Pacific areas and brings warm, moist air

Answer 16

Maritime tropical

Question 17

an instrument that measures atmospheric pressure

Answer 17

barometer

Question 18

a usually brief, heavy storm with rain, wind, lightning and thunder

Answer 18

thunderstorm

Question 19

an air mass that originates in Canada and brings cold, dry air

Answer 19

Continental polar

Question 20

the front edge of advancing warm air mass that replaces colder air with warmer air

Answer 20

warm front

Question 21

instrument that is used to determine the direction of the wind

Answer 21

wind vane

Question 22

a destructive, rotating, funnel-shaped column of air with high wind speeds

Answer 22

tornado

Question 23

an air mass that originates in the southwestern United States and brings warm, dry air

Answer 23

Continental tropical

Question 24

the front edge of a moving mass of cold air that pushes beneath a warmer air mass like a wedge

Answer 24

cold front

Question 25

an instrument that measures temperature

Answer 25

thermometer

Question 26

What are the five types of fronts?

Answer 26

1. Cold front 2. Warm front 3. Stationary 4. Occluded 5. Polar front

Question 27

cold air mass moves under a warm air mass and lifts the warm mass completely off the ground

Answer 27

occluded front

Question 28

What program was designed to promote the rapid exchange of weather information?

Answer 28

World Weather Watch

Question 29

areas of low pressure that are characterized by rotating wind which moves toward the rising air of the center, low pressure region

Answer 29

midlatitude cyclones

Question 30

the boundary where cold air meets warm tropical air

Answer 30

polar front

Question 31

In a polar front, a cold air mass sits over each pole until about ___ degrees ___.

Answer 31

60 degrees latitude

Question 32

the discharge of electricity

Answer 32

lightning

Question 33

front of an air mass that moves very slowly or not at all

Answer 33

stationary front

Question 34

What two things must a hurricane have to form?

Answer 34

1. Must form over a warm tropical ocean | 2. Must have the Coriolis effect

Question 35

What rates hurricane intensity from 1-5?

Answer 35

the Saffir-Simpson scale

Question 36

Symbols & colors are used to communicate weather data on a ___.

Answer 36

weather map

Question 37

issued when conditions are ideal for severe weather

Answer 37

Watch

Question 38

What type of storm have scientists seeded with silver-iodide nuclei?

Answer 38

lightning

Question 39

Where are tornadoes most common?

Answer 39

``` Tornado Alley (Texas through midwestern US) ```

Question 40

48 hour range predictions

Answer 40

daily forecasts

Question 41

issued when severe weather has been spotted or is expected

Answer 41

Warning