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Weather
| Term | Definition |
|---|---|
| Map | a flat , 2 dimensional drawing of land and water |
| globe | a spherical scale model of the earth |
| Latitude | geographic coordinate that specifies the north or south of the Equator |
| Longitude | distance measured in degrees east or west from an imaginary line (called the rime meridian) that goes fro the North pole to the South pole an pass through Greewich ,England |
| Hemisphere | a half of the earth,usually divided into northern and southern halves by the equator,or into western and eastern halves by imaginary line passing through poles . |
| Weather | the state of the atmosphere at a place and time as regards heat,dryness,sunshine, wind and precipitation |
| Climate | the average weather conditions in an area over a long period. |
| Atmosphere | The envelope of |
| cloud | a collection of millions of tiny water droplets suspended in the air |
| hygrometer | a tool used to measure the amount of water vapor in the air |
| condensation | the process of changing from a gas to a liquid. |
| cirrus | white wispy that form at high altitudes and are always made of ice crystals |
| cumulus cloud | fair weather with white puffy tops and dark flat bottoms |
| stratus cloud | lowest clouds that cover the sky like a thick gray blanket |
| Nimbo/Nimbus | precipatating clouds, |
| rain | frozen pecipatation melts and reaches the ground as rain |
| freezing rain | frozen precipatation melts in warm air rain fall and freezes on cold surface |
| sleet | frozen precipatation melts in shallow warm air then refreezes into sleet berfore reaching the surface |
| snow | snow falls through cold air and reaches the surface |
| hail | pellets of frozen rain which fall in showers from cumulonimbus clouds |
| rain guage | a weather instrument that measures rainfall |
| anemometer | a weather instrument that measures wind speed |
| wind vane | a weather instrument that shows the direction the wind is blowing from |
| global winds | winds that are high up in the atmosphere |
| land breeze | a breeze blowing toward the sea from the land,especially night,because the sea is warmer than the land. |
| sea breeze | a breeze that blows from the land the sea especially during the day because land is warmer than the sea |
| prevailing westerlies | prevailing winds from the west toward the east in the middle latitudes between 30 and 60 degrees latitude |
| jet stream | a stead world wide wind that blows from west to east high above earth |
| air pressure | the weight of the air pushing on everything around it. |
| barometer | a weather instrument that measures air pressure |
| high pressure | fair, clear skies,and dry weather |
| low pressure | cloudy skies or rainy storms |
| cold front | brief heavy thunderstorms possibly strong winds ,blizzards or tornadoes |
| warm front | wamer ,more humid weather (or wetter) air once passes brings constant steady showers |
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