| A | B |
|---|
| Continental Margin | Contains continental shelf, slope and rise |
| Continental Slope | Slope of a few degrees that extends from Continental shelf (660 ft-6,600 ft deep) |
| Continental Shelf | Extends from the coast of the continent to the Continental rise (no more than 660 feet) |
| Continental Rise | Gently sloping section of the continental margin which connects the continental slope to the abyssal plain |
| Abyssal Plain | Zone located at a depth of 6,600 to 20,000 feet and covers most of the ocean floor |
| Trench | Extremely deep depression bordering a continent and occurs when one tectonic plates moves under another |
| Guyot | ancient underwater volcano cut off by erosion and submergence |
| Seamount | Isolated mountain of volcanic origin featuring a pointed summit |
| Ocean Ridge | group of underwater mountain chains formed by an outpouring of magma |
