Air Masses

What kind of air mass would form over northern Canada?

• mT

• mP

• cT

• cP

A large body of air with the same temperature, pressure, and humidity is called a(n)...

• front

• boundary

• air mass

• weather pattern

What is a source region?

• where the air mass originates

• where weather starts

• where air masses end up

• the region air masses travel over

What are the 4 types of air masses over the US?

• mP, mT, cP, cT

• mP, cAA, cP, mT

• mP and cT

• cAA, cA, mP, cT

Which abbreviation of an air mass can be identified as cold and moist?

• cP

• mP

• cT

• mT

What type of front is this?

• warm front

• cold front

• occluded front

• stationary front

The map of North America shows the source region of an air mass forming mostly over Mexico. This air mass originating over Mexico is classified as

• continental polar

• continental tropical

• maritime polar

• maritime tropical

Base your answer on the map, which shows the position of the jet stream relative to two air masses and a low-pressure center (L) over the United States. What is the difference in the air temperature and humidity between the cP and mT air masses?

• The cP air mass is warmer and less humid.

• The cP air mass is colder and more humid.

• The mT air mass is warmer and more humid

• The mT air mass is colder and less humid.

Air masses are identified on the basis of temperature and

• type of precipitation

• wind velocity

• moisture content

• atmospheric transparency

An air mass entering Alaska from the northern Pacific Ocean would most likely be labeled on a weather map as

• cT

• cP

• mT

• mP