Air Masses & Weather Fronts

What are air masses?

How many different air masses are there on Earth's surface?

• 4
• 8
• 2
• 6

What is an occluded front?

• A warm front overtakes a cold front, causing heavy rainfall.
• An occluded front is a type of high-pressure system.
• An occluded front is a weather front formed when a cold front catches up to a warm front, lifting the warm air mass.
• An occluded front occurs when two cold fronts collide.

How do meteorologists predict weather changes?

What is an Air Mass?

• A) A small body of air with varying temperature and humidity.

• B) A large body of air with roughly the same temperature and humidity.

• C) A measure of how much water vapor is in the air.

• D) Winds that blow mostly in one direction, moving air masses.

What is Humidity?

• A) A large body of air with roughly the same temperature and humidity.

• B) A measure of how much water vapor is in the air.

• C) Winds that blow mostly in one direction, moving air masses.

• D) The uneven heating of air.

What are Prevailing Winds?

• A) A large body of air with roughly the same temperature and humidity.

• B) A measure of how much water vapor is in the air.

• C) Winds that blow mostly in one direction, moving air masses.

• D) The uneven heating of air.

What is a Convection Cell?

• The boundary between two air masses.

• The circulation of air due to heating and cooling of molecules.

• A type of weather front where cold air masses overtake warm air masses.

What is a Weather Front?

• The circulation of air due to heating and cooling of molecules.

• The boundary between two air masses.

• A type of weather front where cold air masses overtake warm air masses.

What is a Cold Front?

• The circulation of air due to heating and cooling of molecules.

• The boundary between two air masses.

• A type of weather front where cold air masses overtake warm air masses.