| A | B |
| condensation | water changing from a gas to a liquid |
| evaporation | water changing from a liquid to a gas |
| dew point | temperature at which water vapor condenses |
| Two factors that determine dew point are: | temperature and the amount of water vapor in the air |
| precipitation | moisture that falls to the Earth from the atmosphere |
| water cycle | the movement of water from the Earth, into the atmosphere, and back to the Earth |
| humidity | the amount of water vapor in the air |
| cumulus | type of clouds that look like cotton balls |
| stratus | these clouds appear in a smooth even sheet |
| cirrus | clouds with the highest altitude |