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Layers and Plates
Earth Layers and Plate Tectonics
Term | Definition |
---|---|
Crust | The layer that varies the most in thickness |
Asthenopshere | The soft layer of the Earth's upper mantle/crust |
Mantle | The thickest layer of the Earth |
Outer Core | The liquid layer of the core |
Inner Core | The solid dense layer of our planet. |
Transform Boundary | Plates slide past each other |
Convergent Boundary | Plates that move together |
Divergent Boundary | Plates that pull apart |
Plate | Rigid part of the Earth's crust |
Pangea | Means "All Earth" A super continent that existed 250 million years ago |
Earthquake | A shaking or trembling of the Earth |
Plate Tectonics | Theory that the Earth's crust is broken into parts. |
Continental Drift | Continents plowing through the seafloor to their present day position |
Fault | A break in the Earth's crust |
Mid -ocean Ridge | A long mountain chain in the Atlantic Ocean floor where tectonic plates pull apart. |