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3.1 Vocab
| Term | Definition |
|---|---|
| evaporation | process whereby the heat of the sun changed water on Earth's surface from a liquid to a gas. |
| condensation | return of water vapor to a liquid state by cooling. |
| precipitation | liquid or solid water that falls from the clouds to Earth. |
| transpiration | release of water vapor from plants' leaves into the air. |
| runoff | precipitation that runs off the ground. |
| groundwater | water from rain and melting snow that seeps into the ground and is stored beneath Earth's surface. |
| source | place where a stream or river begins. |
| mouth | place where a stream or river ends by flowing into another body of water |
| velocity | distance water flows during some period of time, such as meters per second or feet per second |
| bed load | sediment carried along the bottom of the channel of a stream or river. |
| tributaries | feeder streams. |
| topography | physical characteristics of the land. |
| gradient | slope of a river's channel |