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Fronts

Fronts. By Kendall. Introducing Fronts.

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Fronts

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  1. Fronts By Kendall

  2. IntroducingFronts The line between two masses of air of different densities, temperatures, or moisture is called a front. The four types of fronts are cold, warm, occluded, and stationary. Weather fronts normally travels from west to east. Their direction can be affected by geographic features like mountains and large bodies of water.

  3. Warm Fronts Clouds ~ Cirrus (before front), Cirrostratus, Nimbostratus, and cumulonimbus Warm fronts occur when a warm air mass sneaks up on a cold front. The warm air goes up and over the cold front and very slowly it moves the cold front over. The rain that comes with a warm front is less heavy but more extensive than the rain that comes with cold fronts. The air associated with a warm front becomes more humid than before the front.

  4. Clouds~ mostly cumulonimbus Cold Fronts Cold Fronts occur when a cold air mass replaces a warm one. At a cold front, the cold air is behind the warm air. Because the cold air is so dense, it moves the warm air out of its way, and forces it into the atmosphere. When a cold front passes through, the temperature can drop more than 15 degrees Celsius in the first hour.

  5. Clouds~ cumulonimbus, cirrus, and nimbostratus. Occluded front Occluded fronts occur when cold, warm, and cool air come together. There are two main types of occluded fronts; cold and warm. The difference is the cold occluded front is when the cold air overtakes the warm air and in the warm occluded front the warm air overtakes the cold air.

  6. Clouds~ Altocumulus Cumulus Stationary Fronts Stationary fronts form the boundary between warm and cold air when both of the air masses aren’t moving forward. They are like warm fronts but don’t move as much.

  7. Conclusion The section between two masses of air of different densities, temperatures, or moisture is a front. When two different masses of air come in and one over takes, blends with, or stops movement of the other front, it is classified as either a cold, warm, occluded, or stationary front.

  8. Bibliography Elmar, Dr. Uherek, "Weather Basics." Espere. 18/06/2008. <www.atmosphere.mpg.de/enid/3sg.html>.

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