| A | B |
| meteorologist | scientist who studies the weather |
| forecast | a prediction of what the weather will be like in the near future |
| air pressure | the force of air against Earth's surface |
| humidity | water vapor in the air |
| relitive humidity | measurement that compares the amount of water vaper in air with the amount the air can hold at a certain temperature |
| dew point | the tempurature at which a volume of air cannot hold any more water vapor |
| barometer | an insturment used to measure air pressure |
| anemometer | an insturment used to measure wind speed |
| phychrometer | an insturment used to measure relitive humidity |
| dopplar radar | a type of radar that calculates disstance and shows direction of movement |
| air mass | a large body of air having similar properties or weather conditions |
| front | the boundry between warm and cold masses |
| tornado | a violent, funnel-shaped cloud with extremley strong winds |
| hurricane | a large tropical storm that forms over warm oceans and whose winds have a velocity of at least 110 kilometers per hour |