Chapter 11,      air massLesson 7 –         frontAir Masses      cold frontand Fronts     warm frontChapter 11,   thunders...
cold front – cold air moves in under a warm air mass.Cold fronts often bring brief, heavy storms. There maybe thunderstorm...
cold front – cold air moves in under a warm air mass.Cold fronts often bring brief, heavy storms. There maybe thunderstorm...
warm front – warm air moves in over a cold air mass.Warm fronts often bring light, steady rain of snow. Theprecipitation m...
warm front – warm air moves in over a cold air mass.Warm fronts often bring light, steady rain of snow. Theprecipitation m...
warm front – warm air moves in over a cold air mass.Warm fronts often bring light, steady rain of snow. Theprecipitation m...
warm fronts vs. cold fronts
thunderstorm – the most common type of storm
thunderstorm – the most common type of storm
tornado – a violent whirling wind that moves     across the ground in a narrow path
tornado – a violent whirling wind that moves     across the ground in a narrow path
hurricane – a very large swirling storm with very           low pressure at the center
hurricane – a very large swirling storm with very           low pressure at the center
hurricane – a very large swirling storm with very           low pressure at the center
storm surge – a great rise of the sea along a shore
storm surge – a great rise of the sea along a shore
storm surge – a great rise of the sea along a shore
Chapter 11, Lessons 7 & 8 Air Masses and Fronts; Severe Storms
Chapter 11, Lessons 7 & 8 Air Masses and Fronts; Severe Storms
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Chapter 11, Lessons 7 & 8 Air Masses and Fronts; Severe Storms

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Chapter 11, Lessons 7 & 8 Air Masses and Fronts; Severe Storms

  1. 1. Chapter 11, air massLesson 7 – frontAir Masses cold frontand Fronts warm frontChapter 11, thunderstorm tornadoLesson 8 – hurricane Severe storm surge Storms
  2. 2. cold front – cold air moves in under a warm air mass.Cold fronts often bring brief, heavy storms. There maybe thunderstorms and strong winds. After the storm, the weather is usually cooler and drier.
  3. 3. cold front – cold air moves in under a warm air mass.Cold fronts often bring brief, heavy storms. There maybe thunderstorms and strong winds. After the storm, the weather is usually cooler and drier.
  4. 4. warm front – warm air moves in over a cold air mass.Warm fronts often bring light, steady rain of snow. Theprecipitation may last for days. Winds are usually light.Warm front may also bring fog – stratus clouds that form near the ground. Afterward the weather is usually warmer and more humid.
  5. 5. warm front – warm air moves in over a cold air mass.Warm fronts often bring light, steady rain of snow. Theprecipitation may last for days. Winds are usually light.Warm front may also bring fog – stratus clouds that form near the ground. Afterward the weather is usually warmer and more humid.
  6. 6. warm front – warm air moves in over a cold air mass.Warm fronts often bring light, steady rain of snow. Theprecipitation may last for days. Winds are usually light.Warm front may also bring fog – stratus clouds that form near the ground. Afterward the weather is usually warmer and more humid.
  7. 7. warm fronts vs. cold fronts
  8. 8. thunderstorm – the most common type of storm
  9. 9. thunderstorm – the most common type of storm
  10. 10. tornado – a violent whirling wind that moves across the ground in a narrow path
  11. 11. tornado – a violent whirling wind that moves across the ground in a narrow path
  12. 12. hurricane – a very large swirling storm with very low pressure at the center
  13. 13. hurricane – a very large swirling storm with very low pressure at the center
  14. 14. hurricane – a very large swirling storm with very low pressure at the center
  15. 15. storm surge – a great rise of the sea along a shore
  16. 16. storm surge – a great rise of the sea along a shore
  17. 17. storm surge – a great rise of the sea along a shore

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