Term
| What is the basic process that makes weather? |
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Definition
| every physical process of weather is accompanied by, or is the result of a heat exchange. When various parts of teh earth's surface heat up at different rates. and when one part heats up faster than the other, it creates air ciruclation, and weather changes. |
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Term
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Definition
| when the coast of a large body of water and the land heats up much faster than the water. as the relatively warmer air over the land rises, it draws the relatively cooler air from the water, creating an on-shore breeze. |
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Term
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Definition
| when near a large body of water, in the evening when the land starts to cool down, the breeze shifts to an off-shore breeze because at night the land cools off faster than the water and the air sinks over the land |
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Term
| earths atmospher is made up of..... |
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Definition
| 78% nitrogen, 21% oxygen and 1 percent various other gases. water vapor is suspended in the air and comprises between 0 and 5% of the air volume |
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Term
| average pressure exerted by the atmospher? |
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Definition
| at sea level is 29.92 inches of mercury |
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Term
| 5 major levels of the atmosphere |
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Definition
| 1. troposphere 2. tropopause 3. stratosphere 4. mesophere 5.thermosphere |
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Term
| atmosphere where most flying takes place |
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Definition
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Term
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Definition
| where the most flying takes place. also most affected by the uneven heating of the earth's surface, so has the most weather |
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Term
| troposphere thickness or height? |
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Definition
| at the equator extends from 50 and 60 thousand feet. but at the poles only 20 to 30 thousand feet high |
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Term
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Definition
| a narrow band of high speed wind from 50-150 knots that meanders in and around the tropopause. |
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Term
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Definition
lines of equal pressure. when they are close together the pressure gradient or rate of change is more dramatic and the winds will be stronger.
when moving to high, they more in clockwise. moving to low they move counter clockwise |
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Term
| why winds travel parallel to the isobars and not directly from high to low? |
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Definition
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Term
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Definition
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Term
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Definition
| when water moves from the frozen state(ice or snow) directly to the vapor state without melting |
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Term
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Definition
| temperature- dew point coverage. then divide that by 4.4 and multiply by 1000. |
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Term
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Definition
| clouds that form because of rising air. which means accumulation or heap. characterized by their billowy, puff appearances |
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Term
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Definition
| clouds that form by cooling, stratus means stratified or layered. they are characterized by their flat, layered appearance. |
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Term
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Definition
| between 16,500 and 45,000. called cirriform clouds. include cirrus, cirrocumulus, and cirrostratus clouds. |
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Term
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Definition
| exist from 6,500 to 23,000. usually but not always prefixed with "alto" like altostratus or altocumulus but nimbostratus is another mid level cloud type. |
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Term
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Definition
| extends from surface to 6,500. include stratus, stratocumulus and fair weather cumulus clouds |
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