Air Mass and Weather

Air Masses

Let’s learn about air masses

​vocab

• Air mass

• Prevailing

• Jet stream

• Fronts

​A airmass is a huge body of air,air mass is a volume of air defined by its temperature and humidity

​What is airmass

Multiple Choice

Define airmass

• A huge body of air

• A large cloud

• climate

• I don’t know?

How air masses move

The dense air undercuts the warmer air masses forcing the warm air up and over the colder air causing it to rise into the atmosphere.

​What are prevailing westerlies

​The westerlies, anti-trades, or prevailing westerlies, are prevailing winds from the west toward the east in the middle latitudes between 30 and 60 degrees latitude. They originate from the high-pressure areas in the horse latitudes

Multiple Choice

What are prevailing westerlies

• Winds from south

• Prevailing winds from the west

• Winds from north

• Winds from east

​Maritime Originates over the ocean usually moist they are two types polar and tropical

​maritime air masses

Continental Air masses are rather dry they form over land tropical and continental

​Continental air masses

Multiple Choice

Where do maritime air masses form

• Over water

• On land

• For animals

• On my counter

Multiple Choice

Where do continental airmasses form

• On land

• On water

• From animals

• In my food

​Jet streams

​

Jet streams are relatively narrow bands of strong wind in the upper levels of the atmosphere.

Fronts

​A weather front is a boundary separating air masses for which several characteristics