Understanding Air Masses and Fronts

What is an air mass?

• A large body of air with uniform temperature and humidity

• A small pocket of air with varying temperature and humidity

• A type of cloud formation

• A weather phenomenon that occurs only in the tropics

Which of the following best describes a cold front?

• A boundary where warm air replaces cold air

• A boundary where cold air replaces warm air

• A boundary where two air masses of the same temperature meet

• A boundary that remains stationary

What typically happens to the weather when a warm front passes through an area?

• The temperature drops significantly

• The temperature rises and precipitation may occur

• The weather remains unchanged

• Strong thunderstorms are guaranteed

Which of the following is a characteristic of a cold front?

• It is associated with clear skies and calm weather

• It often brings thunderstorms and cooler temperatures

• It is associated with prolonged periods of rain

• It causes temperatures to rise rapidly

What type of weather is typically associated with a stationary front?

• Clear and sunny

• Unsettled weather with prolonged precipitation

• Hot and dry

• Cold and snowy

Match the Description to the Air Mass.

a

b

c

d

Cold and Dry

Hot and Wet

Cold and Wet

Hot and Dry