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11 Cards in this Set
- Front
- Back
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Tectonic Plates |
Pieces of the lithosphere that move around on top of the asthenosphere |
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Plate Tectonics |
The theory that explains how large pieces of Earth's outermost layer, called tectonic plates, move and change shape. |
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Convergent Boundary |
The boundary at which two tectonic plates collide is a convergent boundary. |
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Subduction Zone |
The denser oceanic crust sinks, or subducts beneath the less-dense continental crust. This process is called subduction. |
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Island Arc |
A series of volcanic islands, called an island arc. |
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Divergent Boundary |
The boundary at which two tectonic plates seperate is called a divergent boundary. |
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Transform boundary |
The boundary at which two tectonic plates slide past one another horizontally. |
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Convection |
Thus, heat from Earths center flows toward the surface. However rock is a poor conductor of heat. Therefore, most of the transfer of heat happens through convection. |
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Convection Currents |
At the surface, cold, dense rock of the lithosphere tends to sink during subduction. This process causes convection currents. |
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Centimeters Per Year |
A measurement for tectonic plate movement. |
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GPS Global Positional System |
Can map the rate of tectonic plate movements using radio signals. |
