| Term | Definition |
| evaporate | when liquid water turns into a gas called vapor and goes into the air |
| water vapor | water in the form of a gas |
| seriate | to put objects in order by one property, such as the amount of water left in a container |
| thermometer | a tool used to measure temperature |
| surface area | the area of a liquid exposed to or touching the air |
| condense | when water vapor cools and turns into liquid water |
| water cycle | the sequence of condensation and evaportaion of water on Earth, causing clouds and rain, and other forms of precipitation |