| A | B |
|---|
| weather | Atmospheric conditions |
| Doppler radar | A type of radar that calculates distance and shows direction of movement |
| radar | An instrument that calculates distance by echoing radio waves |
| meteorologist | A person who studies and attempts to predict weather |
| forecast | A prediction of what the weather will be like in the near future |
| climate | The weather conditions in an area over a long period of time |
| high | An area of air pressure greater than the surrounding air pressure |
| low | An area of air pressure less than the surrounding air pressure |
| barometer | An instrument used to measure air pressure |
| anemometer | An instrument used to measure wind speed |
| humidity | Water vapor in the air |
| relative humidity | Measure of the amount of water vapor in the air compared to the maximum amount it can hold |
| psychrometer | An instrument used to measure relative humidity |
| tornado | A violent funnel-shaped storm with extreme winds. |
| hurricane | A large tropical storm that forms over warm oceans |
| precipitaion | Falling water: rain, sleet, snow, hail |
| psychrometer | An instrument used to measure humidity |
| radar | An instrument that calculates distance by echoing radio waves. |
| lightning | An electrical discharge caused by the static build-up in clouds. |
| rain | Liquid precipitation. |
| hail | Solid ice precipitation. |
| snow | Crystalized ice precipitaion. |
| sleet | Partially frozen precipitaion. |
| wind | Moving air caused by pressure differences. |
| atmosphere | The layer of gases that surrounds Earth. |
| troposphere | the bottom layer of the atmosphere where we live and weather occurs; 75% of all gases |
| stratosphere | the second layer up in the atmosphere; the ozone layer is here |
| mesosphere | the third layer up in the atmosphere; meteorites burn up here |
| thermosphere | the fouth layer up in the atmosphere; satelites orbit here |
