Chapter 3

Question 0

What air masses are commonly moved by in the US

Answer 0

Prevailing westerlies and jet streams

Question 1

Four major types of air masses

Answer 1

Maritime tropical continental polar maritime polar continental tropical

Question 2

What colliding air masses can form

Answer 2

Fronts

Question 3

Four types of fronts

Answer 3

Cold fronts warm fronts occluded fronts stationary fronts

Question 4

Warm front

Answer 4

A fast moving warm front overtakes a slow moving cold front, causes snow if air is warm or clouds If the air is dry (weather is warm after it passes by)

Question 5

Cold front

Answer 5

A rapidly moving cold front runs into a slowly moving warm front, the cold air slides under the warmer air and pushes the warm air along the leaning edge of the cold air ( can cause snow, cloudy skies, and thunderstorms) air becomes cold after it passes through

Question 6

Stationary fronts

Answer 6

Warm and cold air masses meet but neither can move the other, water vapor in the warm air condensed and forms water Vapor ( can bring days of rain, snow, fog, and clouds)

Question 7

Occluded fronts

Answer 7

A warm air mass is caught between two cold air masses, the cooler air masses move underneath the warm air and pushes it upward, the cooler air masses may mix and the temp At the ground is cooler ( clouds, rain, or snow may fall

Question 8

Maritime tropical(mT)

Answer 8

Over the ocean, moist, warm

Question 9

Continental tropical(cT)

Answer 9

Over land, dry, warm

Question 10

Maritime polar(mP)

Answer 10

Over ocean, moist, cold

Question 11

Continental polar(cP)

Answer 11

Over land, dry, cold

Question 12

Prevailing westerlies

Answer 12

Major wind belts over US that push air masses west/east

Question 13

Jet streams

Answer 13

Within prevailing westerlies and are bands of high speed winds that blow from west-east (about 10km above earths surface)

Question 14

Thunderstorms

Answer 14

Form in cumulonimbus clouds

Question 15

What to avoid in storms

Answer 15

Objects that can conduct electricity, such as metal objects, and bodies of water

Question 16

Tornadoes

Answer 16

Formed in thick cumulonimbus clouds

Question 17

Where to go in tornadoes

Answer 17

Storm shelter or basement of a well built building

Question 18

Hurricane

Answer 18

Begins over warm ocean water as a low pressure area or tropical disturbance

Question 19

What to do about a hurricane

Answer 19

Evacuate and leave the area immediately

Question 20

What most precipitation begins as

Answer 20

Snow

Question 21

What meteorologists use to predict weather

Answer 21

Maps charts computers

Question 22

What has been improved to predict weather

Answer 22

Technological improvements in gathering weather data and using computers

Question 23

What shows fronts areas of high and low pressure types of precipitation and temperatures

Answer 23

Standard symbols on weather maps

Question 24

Isobars

Answer 24

Lines joining places in the map that have the same pressure

Question 25

Isotherm

Answer 25

Lines joining places that have the same temperature