| A | B |
|---|
| air mass | the large body of air that has the same properties as teh survace over which is formed |
| cloud seeding | the addition of silver iodide or dry ice particles to clouds to rpoduce a change in weather conditions |
| hydrosphere | all the water that occurs on at Earth's surface |
| ionosphere | a layer of Earth's atmosphere, where ions and free electrons absorb AM radio waves during the day and reflect them back to earth at night. |
| jet stream | narrow wind belts |
| land breeze | wind blowing from land to seat at night |
| ozone layer | a layer of the statosphere with a high concentration of ozone. Protects living things. |
| radiation | the transfer of energy through matter or space by elctromagnetic waves |
| sea breeze | wind blowing from sea to the land. |
| radiation | the transfer of energy through matter or space. |
| trophosphere | the layer of the Earth's atmosphere closest to the ground |
| dew point | the temperature at which air is saturated with water and condensation begins |
| fog | a stratus cloud that forms on or near the ground |
| front | the boundary between two air masses |
| humidity | the amount of water vapor held in the air |
| hurricane | a large, swirling, low pressure system that forms over tropical oceans, winds must reach at least 120 km/hr |
| isobar | on a weather map, a line connecting points of equal atmoshperic pressure |
| isotherm | on a weather map, a line connecting poings of equal temperature |
| meteorologist | a scientist who studeies weather conditions using radar, satelites, and other instruments to make weather maps |
| precipitation | water or ice that condenses in the air and falls to the earths surface |
| relative humidity | the measure of the amount of water vapor in the air, it varies with temperature |
| saturated | condition when air contains as much moisture as possible at a specific temperature |
| station model | a group of meteorological symbols on a weather map that depict weather information at one specific location. |
| tornado | acts like a vaccum, moves over a narrow area of land. |
| weather | the behavior of the atmosphere |
