| A | B |
|---|
| Largest ocean | Pacific |
| Smallest ocean | Arctic |
| Ocean mostly in southern hemisphere | Indian |
| Second largest ocean | Atlantic |
| Uses sound waves to measure depth of ocean floor | Sonar |
| Bounce microwaves off the ocean's surface to measure slight differences in water height | Satellites |
| Travel under the water to observe ocean life | Submersibles |
| Type of plate boundary at mid-ocean ridge | Divergent |
| Type of plate boundary at deep ocean trench | Convergent |
| 3 major regions of the ocean floor | Continental Margin, Ocean Basin Floor, Mid-Ocean Ridge |
| Part of the continental margin that connects to shoreline | Continental Shelf |
| Part of the continental margin that is the steepest | Continental Slope |
| Part of the continental margin that levels out the end of the slope | Continental Rise |
| Deep, flat part of the ocean basin floor | Abyssal Plain |
| Longest underwater mountain range on Earth | Mid-Ocean Ridge |
| Underwater cone-shaped volcanic mountains | Seamounts |
| Once Seamounts pop above the water's surface they are called | Volcanic Islands |
| Deep caverns in the ocean floor | Deep Ocean Trenches |
| Flat-topped seamount | Guyot |
| Name of the process that forms deep-ocean trenches ans Seamounts | Subduction |
