period 3 group 4

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period 3 group 4

  1. 1. Fronts <ul><li>A front is a boundary between two air masses of different density, moisture, or temperature. </li></ul><ul><li>And there is four different kind of them and they are Cold front, Warm front, Stationary and Occluded front. </li></ul><ul><li>And they are represent by many curve lines . </li></ul>
  2. 2. Here Are The Differ Kind Of Fronts And There Symbol
  3. 3. Cold Front <ul><ul><li>A Cold front is the cold air cuts underneath the warm air and forces the warm air up a much steeper angle. A cold fonts the air is cooled quickly and forms a narrow band of thick cumulonimbus clouds. </li></ul></ul><ul><ul><li>Then this produce a large thunderstorm or even a tornadoes . </li></ul></ul><ul><ul><li>And cold fronts are a map are shown by a blue line with triangles. </li></ul></ul>
  4. 5. Warm Front <ul><li>A warm front occurs when lighter, warmer air advance over heavier, colder air. </li></ul><ul><li>Warm fronts air shown on a weather map with red line with red semicircles . </li></ul><ul><li>Like This: </li></ul>
  5. 7. Occluded Fronts <ul><li>This front includes 3 types of air masses of differ temperature- colder air, warm air, and cooler air. </li></ul><ul><li>This may occur when cold air mass moves toward cool air with the warm between the two. </li></ul><ul><li>The colder air forces the warm air upward, closing off the warm air from the surface. </li></ul><ul><li>They are shown on a map as purple lines with triangles and semicircle. </li></ul>
  6. 8. Diagram Of Occluded Front
  7. 9. Stationary Front <ul><li>A stationary front occur when a boundary between air masses stop advancing. </li></ul><ul><li>They can remain in a place for several days and it cause light wind and precipitation. </li></ul><ul><li>They are shown on the map as an alternating red and blue line. </li></ul><ul><li>Red semicircle point toward the cold and blue towards the warm </li></ul>
  8. 10. Diagram OF Stationary Front

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