| A | B |
|---|
| slope | The inclined surface of a hill or mountain |
| meander | To curve or follow a winding path |
| channels | deep parts of a river |
| flood | Overflowing of water onto land |
| wetlands | Land that is covered with water, such as a bog, marsh or swamp |
| basin | An area of land drained by a river and the streams and creeks that feed it |
| hydrologists | A scientist who studies water |
| waves | The up and down movement of water in a lake or ocean |
| shoreline | A boundary between land and water |
| wave energy | The energy in the motion of water |
| backwash | A backward flow of water |
| barrier islands | narrow islands running parallel to the shoreline, built by waves |
| destructive waves | High waves with a strong backwash that erodes material, deteriorates beaches |
| constructive waves | A low waves that deposits material, builds up a beach |
| seawalls | A structure built by humans to prevent erosion of a shoreline |
| breakwaters | Structures built by humans to prevent erosionof a shoreline |
| reservoirs | A human man-made lake behind a dam |
