Air masses and Fronts

An air mass is

• a large body of air with about the same temperature and humidity throughout

• the amount of moisture in the air

• a place where two different air masses meet

• a cold air mass that bumps against a warm air mass

What is humidity?

• cold air

• hot air

• the amount of moisture in the air

• direction of a front

What is a front?

• where warm air mass meets

• measurements to make weather maps

• a large body of air

• a place where two different air masses meet.

A cold front is,,,,,

• a cold air mass that bumps against a warm air mass

• a warm air mass meets a colder air mass and slowly rises over it.

What is a warm front?

• a cold air mass bumps against a warm air mass

• a warm air mass meets a colder air mass and slowly rises over it

• two air masses meet and stop moving

• warm air mass gets caught between 2 cold air masses

What kind of precipitation falls during a cold front?

• thunderstorms or severe weather

• precipitation lasting several days

• strong wind and heavy precipitation

• steady rain

What kind of precipitation falls during a warm front?

• long lasting rain

• thunderstorms and severe weather

• heavy precipitation

• steady rain

If an air mass forms above land, it will be

• wet

• dry

• cold

• hot

If an air mass forms over an ocean it will be

• wet

• dry

• cold

• warm

What weather instrument measures air pressure?

• hygrometer

• anemometer

• thermometer

• barometer