1. AIR MASSES & FRONTS

2. air mass- large bodies of air covering land and ocean areas
1. Continental -air mass that forms over land
2. Maritime- air mass that forms over water

3. CHARACTERISTICS OF AIR MASSES
Polar- cold mass – forms in polar regions
Tropical- warm air mass –form in the Tropics

4. Blue lines are cold fronts and red lines are warm fronts
Front – the area where two different air masses meet/They move but do not mix!
Blue lines are cold fronts and
red lines are warm fronts

5. COLD FRONT
Cold Front- when a cold air mass meets up with a warm mass a cold front forms----Cold air mass pushes the warm air mass up quickly. This causes cumulo-nimbus clouds or thunder clouds, and bring thunderstorms or heavy snow falls

6. WARM FRONT
Warm Front – When a warm air mass meets up with a cold air mass – the warm air climbs slowly over the cold air. This bring stratus clouds and steady rainfall or snow

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