14.2 Air Masses and Fronts

Question 1

Air mass

Answer 1

An extremely large body of air that has similar temperature and moisture characteristics throughout.

Question 2

Air mass modification

Answer 2

Changes to the characteristics an air mass obtains from its region as the air mass moves over land or water.

Question 3

Cold front

Answer 3

A front where a cold air mass moves across Earth’s surface to displace a warm air mass.

Question 4

Front

Answer 4

The narrow boundary or zone where two distinct air masses collide.

Question 5

Isobar

Answer 5

A line on a weather map that connect points of equal atmospheric pressure.

Question 6

Occluded front

Answer 6

A front that is formed when a cold front overtakes a slower-moving warm front.

Question 7

Source region

Answer 7

The region where an air mass forms.

Question 8

Station model

Answer 8

A graphic representation on a weather map of weather data for a specific place at a specific time.

Question 9

Stationary front

Answer 9

A front where there is little horizontal movement along the boundary between warm and cold air masses.

Question 10

Warm front

Answer 10

A front where warm air advances against a mass of colder air.