| A | B |
|---|
| weather | state of the atmosphere at a specific time and place |
| humidity | amount of water vapor in the air |
| relative humidity | amount of water vapor in air compared to amount needed for saturation |
| dew point | temperature when water vapor in air condenses to liquid |
| fog | stratus cloud formed near the ground |
| precipitation | water falling from clouds |
| air mass | large body of air whose movement is responsible for weather changes |
| front | boundary between two air masses of different density |
| tornado | violently rotating column of air in contact with ground |
| hurricane | most powerful storm; low pressure system formed over Atlantic |
| blizzard | winter storm with 56 km/h winds and blowing snow |
| meteorologist | person who studies the weather |
| station model | map showing weather conditions at a specific location |
| isotherm | line that connects points of equal temperature |
| isobar | line that connects points of equal atmospheric pressure |
