Chapter 16 section 2

1
Chapter 16 section 2

• Fronts

2
Cold Fronts

• Cold air moves under warm air
• Moves quickly
• Brings thunderstorms, heavy rain or snow
• Cooler dry weather follows

3
Warm Front

• Warm air moves over cold, denser air
• Gradually replaces cold air
• Brings drizzly rain
• Clear, warm weather follows

4
Occluded Front

• Warm air mass caught between 2 colder air masses
• Cold air mass pushes up the warm air mass
• Cool temperatures, large amounts of rain and snow

5
Stationary Front

• Weak cold air mass meets a weak warm air mass
• Stop, becomes stationary because not enough wind
  to force the other mass away
• Many days of cloudy, wet weather

6
(No Transcript)
7
(No Transcript)
8
Cyclones

• Low pressure areas
• Where air masses come together or converge and
  rise
• Winds spiral toward the center
• Moves counterclockwise
• Causes stormy weather

9
Anticyclones

• Areas of high pressure
• Air moves apart, or diverges, and sinks
• Cooler, denser air moves out of the high pressure
  center
• Moves clockwise
• Brings dry, clear weather

10
(No Transcript)
11
(No Transcript)