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Science vocab
3.1
Term | Definition |
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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 |