| A | B |
|---|
| What occurs when the volume of water in a river increases so much that the river overflows its channel? | flood |
| a river and all its tributaries | river system |
| supplying water to areas of land to make them suitable for growing crops | irrigation |
| molecules at the surface of a liquid absorb enough energy to change to the gaseous state | evaporation |
| continuous process by which water moves through living and nonliving parts of the environment | water cycle |
| the water that fills cracks and spaces in underground soil and rock layers | groundwater |
| condensed droplets of water that have clumped together around tiny dust particles in the air | clouds |
| seasonal change that refreshes the supply of nutrients in a lake | lake turnover |
| process whereby water is given off through the leaves of plants | transpiration |
| the place where an organism lives that provides the things it needs to survive | habitat |
| body of water that resembles a pond but whose bottom receives no sunlight at its center | lake |
| materials that allow water to easily pass through | permeable |
| layer of rock and soil above the water table | unsaturated zone |
| ridge of land that separates one watershed from another | divide |
