| A | B |
|---|
| anemometer | measures wind speed |
| barometer | measure air pressure |
| wind vane | shows wind direction |
| meteorologist | scientist who studies weather, and makes weather maps and predictions |
| humidity | amount of water vapor in the air |
| hygrometer | measures water vapor in the air (humidity) |
| condensation | water in the air condenses and forms clouds |
| evaporation | process of liquid water changing to water vapor |
| precipitation | hail, sleet, rain and snow |
| air mass | vast body of air with almost the same temperature and humidity |
| front | forms when air masses meet |
| states of matter | liquid, solid and gas |
| fresh water | 1% is usable by humans |
| cirrus | thin, wispy clouds |
| cumulo-nimbus | large clouds that cause thunderstorms |
| cumulus | puffy clouds |
| stratus | layered clouds with a flat base |
