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