Ocean reliefVersion en ligne Match the following elements of ocean relief with their definitions par Alicia Martin 1 Group 1 2 Group 2 3 Group 3 4 Group 4 5 Group 5 it's a huge depression on the sea floor formed when a plate sinks under another plate Deep see trench it's a huge mountain chain located in the centre of many of the Earth's oceans. The axis is called ocean rift. Mid ocean rigde it's the bottom of the ocean where you can find the flattest areas on the Earth and mountains, volcanoes, Guyots, etc Abyssal plain it's a big depression that extends from continental shelf to the sea floor Continental slope It's a part of continent that extends beyond shoreline, under the ocean (it belongs to continent) Continental shelf