Matching Pairs Ocean Floor FeaturesOnline version oceanic landforms by Taylor Tant 1 Trench 2 Abyssal Plain 3 Mid Ocean Ridge 4 Continental Shelf 5 Continental Slope 6 Rift/ Rift Zone 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 a steep-sided canyon with deep, narrow valleys in the bottom of the ocean. 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 large area of flat land on the ocean floor