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Fronts

Fronts. Front: a boundary between 2 air masses Warm air and cold air do not mix well. Changes in weather occur along fronts. 4 Types of fronts: Cold Front Warm front Stationary front Occluded front. 1. Cold Front Occurs when a cold air mass (CAM) takes over a warm air mass (WAM)

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Fronts

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  1. Fronts

  2. Front: a boundary between 2 air masses • Warm air and cold air do not mix well. • Changes in weather occur along fronts. • 4 Types of fronts: • Cold Front • Warm front • Stationary front • Occluded front

  3. 1. Cold Front • Occurs when a cold air mass(CAM) takes over a warm air mass (WAM) • THEY BRING COLD AIR. • Cold air “bulldoses” underneath the warm air. • Cumulus and Cumulonimbus clouds occur along cold fronts. • Cumulonimbus clouds produce thunderstorms!

  4. 2. Warm Front • Occurs when a warm air mass (WAM) overtakes a cold air mass (CAM) • Warm air rides up on top of the cold air. • W. F. BRING WARM AIR. • Have a “distinctive pattern of clouds” when they are coming. • Beginning with cirrus, followed by cirrostratus , altostratus and finally nimbostratus. • W.F. produce light, steady rain or snow.

  5. http://www.cpo.com/home/Portals/2/Media/post_sale_content/PES/simulations/sim_pes_weatherch11p263.swfhttp://www.cpo.com/home/Portals/2/Media/post_sale_content/PES/simulations/sim_pes_weatherch11p263.swf • http://www.phschool.com/atschool/phsciexp/active_art/weather_fronts/weather_fronts.swf

  6. 3. Stationary front • Occurs when 2 air masses meet and move parallel to the front. • S.F. produce similar weather to a warm front. • 4. Occluded Front • Occurs when a fast moving cold front overtakes a warm front, completely lifting the warm air off the ground. • O.F. produces produce similar weather to a cold front.

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