Matching Pairs Ocean Floor FeaturesOnline version oceanic landforms by Taylor Tant 1 Continental Shelf 2 Continental Slope 3 Mid Ocean Ridge 4 Rift/ Rift Zone 5 Trench 6 Abyssal Plain a steep-sided canyon with deep, narrow valleys in the bottom of the ocean. The steep slope where the continental shelf drops to the bottom of the ocean floor the center of the highest part of the mid-ocean ridge; it is a narrow trench The edge of the continent that is under water; shallow part of the ocean large area of flat land on the ocean floor underwater volcanic mountains that divide the ocean floor into 2 parts