| A | B |
|---|
| Pangaea | Name of Wegener's super continent |
| what Wegener called the slow moving of the continents across the Earth's surface | continental drift |
| an trace of an ancient organism that has been preserved in rock, it could be plant or animal | fossil |
| a tall fern like plant found in fossil form by Wegener in Africa, South America, Australia, and Antarctica | glossopteris |
| an undersea mountain range where new ocean floor is produced | mid-ocean ridge |
| a device that bounces sound waves off the bottom to determine how deep the water is | sonar |
| the process of molten material that makes a new organic crust that is added to the ocean floor | sea-floor spreading |
| a deep valley along the ocean floor where organic crust slowly sinks into the mantle | deep-ocean or deep-sea trenches |
| the process by which the ocean floor sinks into an ocean trench and is remelted into the mantle | subduction |
| separate parts of the fractured (broken) lithosphere | plates |
