1. Predicting the Weather
Air Masses

2. Air Masses
What do you think an air mass is and what
effect would it have on the weather?
TURN AND TALK to discuss, then share answers
as a class.

3. Air Masses
An air mass is a large body of air with about
the same temperature and humidity
throughout.
Humidity is the amount of moisture in the air.

4. Air Masses
An air mass can cover thousands of square
kilometers.
There are four basic types of air masses.

5. Air Masses
1.
2.
3.
4.
Cold and Dry - Continental Polar
Cold and Humid - Maritime Polar
Warm and Dry - Continental Tropical
Warm and Humid - Continental Tropical

6. Air Masses
Weather maps are used to help scientists
follow the movement of air masses.