| A | B |
|---|
| Evaporation | a change in state from a liquid to a gas |
| Condensation | a change in state from a gas to a liquid |
| Precipitation | any form of liquid that falls to the Earth |
| Humidity | the amount of moisture in the air |
| Front | the boundary where two air masses touch |
| Meteorologist | a scientist who studies the weather |
| Barometer | an instrument used to measure air pressure |
| Anemometer | an instrument used to measure wind speed |
| Wind vane | an instrument used to measure wind direction |
