| A | B |
|---|
| two major factors that affect runoff | amount of rain and amount of time |
| runoff | extra water that doesn't soak into the ground or evaporate, instead it runs across the surface of the Earth |
| two things that slow down runoff | vegetation and trees |
| suspended load | the sediment that a stream carries |
| gravity | this pulls water to the center of the Earth |
| sheet erosion | when water flows over ground in sheets and picks up sediments |
| gets deeper and wider | when more water flows into the stream, what happens to the stream |
| drainage basin | area of land from which a stream or river collects runoff |
| slope of the land | the stage of a river which depends on this |
| young stream | type of stream which flows swiftly, has white water rapids and waterfall |
| mature stream | type of stream starts to erode the sides, and make curves, flows smoothly through a valley, has beginnings or meanders |
| old stream | type of stream flows smoothly through a broad flat floodplain, has oxbow lakes, and meets at the center of a drainage basin |
| Mississippi | largest drainage basin in the U.S. |
| flowing down a steep slope | when does water have the most energy |
| drop its load | what happens when water loses its energy |
| floods | when streams and rivers flow out of their banks |
| heavy rain and dams | two things which can cause a flood |
