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Science Vocab.
Ecosystem
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 channelof a stream or river |
tributaries | feeder streams |
topography | physical characteristics of the land |
gradient | slope of a river channel |