| A | B |
|---|
| weather | short term atmospheric conditions such as temperature, precipitation and wind |
| humidity | moisture in the air |
| relative humidity | the amount of moisture in the air compared to the amount it could hold |
| psychrometer | a high tech tool used to measure relative humidity |
| wet / dry bulb thermometer | a low tech tool used to measure relative humidity |
| precipitation | water falling from the sky |
| dew point | the temperature at which condensation occurs in the atmosphere |
| tornado | a rotating storm creating when warm and cold fronts collide |
| hurricane | a cyclone in the western Atlantic Ocean |
| thunderstorm | a brief, intense storm characterized by lots of rain, lightning and thunder |
| cyclone | an area of low pressure, surrounded by high pressure; a type of storm is named after this system |
| typhoon | a cyclone in the Pacific Ocean |
| anticyclone | an area of high pressure surrounded by low pressure |
| condensation | gas turning to liquid |
| clouds | an area of condensed water in the atmosphere |
| cirrus clouds | high altitude, wispy clouds |
| stratus clouds | a blanket of clouds at low altitude |
| cumulus clouds | fluffy, dense white clouds with darker, flat bottoms |
| cumulonimbus clouds | type of cloud that produces thunderstorms |
| front | the leading edge of a moving air mass |
| air mass | a large area of air that has the same temperature, pressure and humidity readings |
| continental | about or over land |
| maritime | about or over the ocean |
| polar | about or over the poles |
| tropical | about or over the areas between 25 degrees north and south latitude |
