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Science vocab
3.1
| Term | Definition |
|---|---|
| Evaporation | process whereby the heat of the sun changes 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 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 channel |