science quest
Terms
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- land breeze
- usually during the night wind from over the land blow onto the ocean because it is cool air moving to take warmer air's place because it rises
- convection
- transfer of heat by the movement of a fluid; molecules can move through fluids and they take heat with them
- fluid
- any luquid or gas
- global convection currents
- the movement of air between the equator and the poles produce global winds due to the unequal heating of the earth
- prevailing westerlies
- blow from west to east toward the poles between 30 degrees-60 degrees north and south latitude
- mesosphere
- 3rd lowest level of atmosphere; 50-80km; coldest of all levels
- bernoulli's principle
- the pressure in a moving fluid is less than the pressure in the surrounding fluid
- jet streams
- 10km high are high-speed winds that blow west to east at 200-400km/hr
- doldrums
- near the equator, very weak
- radiation
- heat directly from the source by electromagnetic waves; cannot be seen
- wind-chill factor
- the wind moving over your skin decreases your tempreature
- thermosphere
- highest level of atmosphere; 80-beyondkm; seperated into ionosphere and exosphere
- trade winds
- blow towards the equator from 30 degrees north-south/ west; strong winds used for moving sailing ships
- stratosphere
- 2nd lowest level of atmosphere; 12-50km; lower and upper stratosphere
- air pressure
- force of the atmosphere
- atmosphere
- layer of gas that surrounds the earth
- conduction
- the direct transfer of heat from one substance to another; works best with solids, but not as good with fluids; gases are extremely poor conductors
- anemometer
- used to meausre wind speed
- troposphere
- lowest level of atmosphere; all of earth's weather occurs; 9-16km above planet
- local wind
- winds that blow over short distances
- sea breeze
- usually during the day wind from over the ocean blow onto land because it is cool air moving to take warmer air's place because it rises
- gravity
- force that pulls down
- polar easterlies
- cold air near the poles sinks toward lower latitudes; the C.E. shifts the wind from the east to the west; they meet the westerlies about 60 degrees north and south and have major effect on the U.S. weather
- Buoyancy
- the force of a liquid pushing up on an object
- wind
- the horizontal movement of air caused by differences in pressure
- global winds
- wind over long distances