| A | B |
|---|
| Doldrums | Calm areas .... no winds |
| Westerlies | middle latitudes dominated by these west to east winds |
| polar winds | high latitude winds...direction varies...mostly these winds come from the east |
| front | when warm air meets cold air...two masses with diff. temp. and amounts of moisture meet..usually causes stormy weather |
| remote sensor | device attached to satellites...tracks changes that are happening around the planet |
| perma frost | water below the surface of the tundra that stays frozen all year |
| elevation | height on earths surface above or below sea level |
| tornado | smallest, most violent storm...twisting spiral of air..common in SE and Central U.S. |
| hurricane | tropical storm..brings high winds..heavy rains..high seas...also called hurricane |
| precipitation | large condensation droplets...(rain, snow, sleet, hail) |
| condensation | water vapor changes from a gas to liquid droplets...(clouds, fog, dew) |
| humidity | the amount of water in the air |
| evaporation | water is changed from liquid to gas |
| prevailing winds | winds that ususally blow inthe same direction...these winds blow from areas of high to low pressure |
| green house effect | heat trapped by the Earths atmosphere heats the Earth |
| climate | weather conditions averaged over a long period of time |
| weather | the condition of the atmosphere at a given time and place |
| air pressure | the measurement of the force exerted by air |
| trade winds | these winds blow from subrioical high pressure zones towrd the equatorial low pressure zone..(explorers used these to sail from Europe to America) |
| temperature | measurement of heat in the atmosphere |
| monsoon | winds that completely reverse direction bringing wet and dry seasons |
| steppe | short grass..semi-arid...transition beween arid (dry) desert and more humid(wet) climate |
| rain-shadow effect | forming of a desert on the leeward side of a mountain |
| orographic effect | the effect of elevation on weather and climate...produces moisture on the windward side and dryness on the leeward side |
| landsat | a satellite...orbits around the poles...detects changes like vegetation and moisture |
