| A | B |
|---|
| weather | the condition of the atmosphere at a certain time and place |
| humidity | the amount of water vapor in the air |
| relative humidity | how much water vapor is in the air compared with how much the air can hold (%) |
| saturated | when the air can't hold any more water vapor |
| precipitation | rain, snow, sleet, hail falling from clouds |
| runoff | water flowing across the land and flowing into bodies of water |
| evaporation | when liquid water changes into water vapor |
| condensation | when water vapor (gas) cools and becomes a liquid (how clouds are made) |
| cloud | a collection of small water droplets or ice crystals suspended (floating) in the air |
| dew point | the temperature where gases condense into liquids |
| water cycle | the continuous movement of water from the Earth's surface, into the air, onto and over the land, into the ground and back to the surface |
| water vapor | water in the form of a gas (moisture in the air) |
