| A | B |
|---|
| groyne | Short wall, perpendicular to the main current.The current's energy is expanded on the groyne,causing it to deposit sediments. |
| erosion | An eroding or being eroded. |
| deposition | A deposition or being disposed. |
| contour map | An outlined map |
| contour line | An outlined line |
| bathymetric map | A topographic map of the ocean floor. |
| isobath | A contour line on a bathymetric map. |
| bathyscaph | A small submarine. |
| submersible | An underwater research vessel designed to withstand the pressure of ocean water below the surface. |
| Continental shelf | Flat area close to the shoreline, slopes down as it goes away from the shoreline. |
| continental slope | the drop off from the continental shelf to the ocean floor. |
| abyssal plains | Flattest area on eath,debris and sediment form shelf&slope fill valleys in deep little life. |
| ocean trench | Huge plates push together and as one is forced under,it forms deep trenches. |
| mid ocean ridge | Chains of underwater mountaind found by rift zones. |
| rift zone | Where ocean plates are spreading apart,magma oozes into cracks,site of underwater volcanoes. |
