| A | B |
|---|
| erosion | xxx |
| water cycle | xxxx |
| tributary | xxx |
| percolation | xxx |
| runoff | xxx |
| watershed/drainage basin | xxx |
| divide | xxx |
| channel | xxx |
| gradient | measure of the change in elevation over a certain distance |
| discharge | amount of water that a stream or river carries in a given amount of time |
| load | xxx |
| William Morris Davis | developed the model for the stages of a river in the 1900's |
| deposition | section 2 |
| sediment | xxx |
| placer deposit | sediment that collects where the current slows down |
| delta | xxx |
| alluvial fan | xxxx |
| floodplain | xxx |
| dam | xxx |
| levee | xxx |
| water table | section 3 |
| zone of aeration | upper portion of the underground area in which rainwater seeps |
| zone of saturation | area in which water collects in the spaces between rocks and particles |
| aquifer | xxx |
| porosity | xxx |
| permeability | xxx |
| impermeable | xxxxx |
| friction | a force that causes moving objects to slow down |
| recharge zone | xxx |
| spring | places where the water table has reached the surface of the earth, and water flows out from the ground |
| artesian spring | XXXX |
| well | man-made hole that is deeper than the water table |
| stalactites | xxx |
| stalagmites | xxx |
| dripstone column | xxx |
| sinkholes | circular depression causwed by a cave collapse |
| point-source pollution | section 4 |
| nonpoint-source pollution | xxx |
| dissolved oxygen | O2 that is dissolved in water |
| thermal pollution | increase in water temperaturewhich effects a body of water |
| alkalinity | waters ability to neutralize acids |
| sewage treatment plants | xxx |
| primary treatment | xxx |
| secondary treatment | xxx |
| septic tank | xxx |
| drain field | xxxx |
