Hurricanes and Clouds
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Created by:
ClaireMacMillan Plus on January 28, 2012
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General stuff for midterm
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23 terms
Terms | Definitions |
|---|---|
 Where do hurricanes get their energy? | 1. Sun's radiation warms oceans and air above the water 2. Humid air rises, expands, and cools 3. Forms clouds, creating condensation and releases energy *Begin over warm water in low pressure area |
| Sublimation | From ice, or solid, to gas |
| Deposition | From gas to solid, or ice |
| Specific Heat | Amount of heat needed to raise temperature of a substance by 1 degree Celsius EX: Water has a very high specific heat |
| Latent Heat | Energy that is released or absorbed during a phase change |
| Cloud Formation | 1. Air rises 2. Air cools and loses energy 3. Air reaches 100% relative humidity 4. Condensation |
| Clouds | Evaporated water and dust |
| Insolation | Sun causes air to rise |
| Dew Point | Reached condensation, temperature |
| Wind | Horizontal movement from areas of high pressure to low pressure |
| Why does pressure occur? | Unequal heating of atmosphere |
| Local Winds | Caused by unequal heating within Earth's surface within a small area |
| Global Winds | Winds that blow steadily over long distances |
| Coriolis Effect | Earth's Rotation causes global winds to curve The way Earth's rotation makes winds in the Northern Hemisphere curve to the right and winds in the Southern Hemisphere curve to the left. |
| Horse Latitudes | Hot air cools, then sinks, no wind 30 degrees North and South of equator |
| Trade Winds | Blow from horse latitudes |
| Prevailing Westerlies | Blow northwest away from the horse latitudes |
| Polar easterlies | Cold air near the poles sinks and flows towards lower latitudes Prevailing winds that blow from east to west between 60degrees-90degrees latitude in both hemisphere. |
| Doldrums | Band of air around the equator that is heated a rises with little wind and low pressure |
| Hurricane | Tropical storm that has winds of 118 km/hr or higher |
| Levels of Storms | Tropical Depression Tropical Storm Hurricane |
| Saffir-Simpson Scale | Classifies hurricanes according to wind speed, flooding, and potential for property damage |
| Storm Surge | Occurs when hurricane winds drive ocean water onshore, can reach 6 m above normal sea level |
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