Ch. 6.1 Running Water and Ground Water flash cards

Set: Ch. 6.1 Running Water and Ground Water

Term	Definition
water cycle	unending circulation; water constantly moves among oceans, atmosphere, solid Earth, and biosphere;
infiltration	movement of surface water into rock/soil through cracks and pore spaces;
transpiration	runoff returns to atmosphere because of evaporation from soil,lakes,streams;plants absorb water and release into atmosphere;
Earth's water cycle balance	average annual precipation over Earth equals amount of water that evaporates;
gradient	slope or steepness of a stream channel; expressed as vertical drop of stream over certain distance;

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