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