| A | B |
|---|
| weather | refers to the state of the atmosphere at a specific time and place |
| humidity | amount of water vapor present in the air |
| relative humidity | a measure of the amount of water vapor present in the air compared to the amount needed for saturation at a specific temperature |
| dew point | changed with the amount of water vapor in the air |
| fog | when air cooled to its dew point near the ground |
| precipitation | water falling from clouds |
| air mass | large body of air that has properties similar to the part of Earth's surface over which it develops |
| front | a boundary between two air masses of different density, moisture, or temperature |
| tornado | violently rotating column of air in contact with the ground |
| hurricane | most powerful storm |
| blizzard | winter storm that lasts at least 3 hours with temperatures of -12 degrees celcius or below, poor visibility, and winds of at least 51 km/h |
| meteorologist | a person who studies the weather |
| station model | gathered data recorded on a map using a combination of symbols |
| isotherm | line that connects points of equal temperature |
| isobar | line drawn to connect points of equal atmospheric pressure |
