1.6 Air Masses and Fronts Ch10 L7

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1.6 Air Masses and Fronts Ch10 L7

  1. 1. Air Masses & Fronts pgs. D68-D73 Chapter 10 Lesson 7
  2. 2. 1. air mass <ul><li>A large region of the atmosphere where the air has similar properties throughout. </li></ul>
  3. 3. 2. fronts <ul><li>Where warm and cold air come together, but do not mix </li></ul><ul><li>A narrow boundary forms between the cold and warm air. </li></ul>
  4. 4. 3. cold fronts <ul><li>Cold air moves in under a warm air mass. </li></ul><ul><li>Often bring brief, heavy storms, there may be thunderstorms and strong winds. </li></ul><ul><li>After the storm the skies are usually clearer, and the weather is usually cooler and drier. </li></ul>
  5. 5. 4. warm fronts <ul><li>Warm air moves in over a cold air mass. </li></ul><ul><li>Often bring light, steady rain or snow. </li></ul><ul><li>The precipitation may last for days. </li></ul><ul><li>Winds are usually light. </li></ul>
  6. 6. warm fronts continued… <ul><li>May also bring fog—stratus clouds that form near the ground. </li></ul><ul><li>Afterward the weather usually warmer and more humid. </li></ul>

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