click below
click below
Normal Size Small Size show me how
Plate Tectonics
Plate Tectonics Vocabulary
| Term | Definition |
|---|---|
| Continental Crust | Crust not as dense as oceanic crust. |
| Oceanic Crust | Crust in the Ocean. |
| Mantle | Layer of rock between the earth's crust and core. |
| Inner Core | Solid dense center of the earth. (Hottest Layer) |
| Outer Core | Liquid core that is formed around the Inner Core. |
| Lithosphere | The solid outer layer of the earth that consists of the ridged part of the mantle. |
| Lithospheric Plates | Block of Lithosphere that consists of the crust and outer most layer of mantle that moves. |
| Asthenosphere | A zone in the upper mantle of the earth, consisting of hot, plastic rock, that lies underneath the solid lithosphere. |
| Plate Boundaries | When tectonic plates touch. |
| Continental Drift | When Earth was one piece and pieces of the crust were torn apart to make continents today. :) |
| Convection Currents | Causes oceanic lithosphere to move sideways from each other. |
| Plate Tectonics | Plate Tectonics is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of the Earth's lithosphere, since tectonic processes began on Earth between 3 and 3.5 billion years ago. |
| Convergent Boundary | The boundary formed by the collision of 2 plates. |
| Divergent Boundary | Boundary when 2 plates move away from each other. |
| Transform Boundary | When 2 plates are grinding against each other. |