An immense body of air characterized by similar properties at any given altitude is known as a(n)...

• cyclone
• air mass
• anticyclone
• front

Which two properties characterize an air mass?

• temperature and location
• temperature and pressure
• temperature and moisture
• moisture and pressure

Which type of air mass originates in northern Canada?

• mT
• cP
• mP
• cT

Maritime air masses form...

• over land
• over water
• only in winter
• only in summer

A cT air mass is...

• cold and dry
• cold and wet
• hot and dry
• hot and wet

Which air masses have the greatest effect on weather conditions in much of the United States?

• cP and mT
• mP and cP
• mP and cT
• mT and cT

The boundary that separates different air masses is called a(n)..

• front
• cyclone
• anticyclone
• storm

On a weather map, which type of front is shown by a line with triangular points on one side?

• warm 
• cold
• stationary
• occluded

On a weather map, which type of front is shown by a line with semicircles extending from one side?

• warm
• cold
• stationary
• occluded

What type of front forms when the surface position of the front does not move?

• warm
• cold
• stationary
• occluded