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