 | Term | Definition |
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LITHOSPHERE |
This is a layer of Earth made up of the crust and the solid portion of the upper mantle. |
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ASTHENOSPHERE |
This is that portion of the upper mantle where lateral motion of the convection current exists. |
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PLATE |
This is a piece or section of lithosphere. |
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CRUST |
This is the solid, uppermost layer of Earth. |
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CONVECTION CURRENT |
This is the part of the mantle that circulates due to the heat of Earth's core. |
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MOUNTAIN |
This is the name given to any part of Earth's surface that rises high above the surrounding land (usually 1000 ft above). |
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VOLCANO |
This is what we call anywhere molten rock rises to the surface. |
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MIDOCEAN RIDGE |
this is the raised surface of the crust above an upwelling. It is similar to a mountain. |
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UPWELLING |
This is that portion of a convection current that is rising due to the heat of the core. |
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RIFT VALLEY |
This is the lower portion of the crust between crests of the ridge. |
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FOLDED MOUNTAINS |
This is the result of a continental-continental collision. The Himalaya Mountains are a good example of this. |
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OCEANIC |
This refers to a plate made up of ocean floor crust. |
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CONTINENTAL |
This refers to a plate made up of continental crust. |
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RING OF FIRE |
This refers to the belt or chain of volcanoes and earthquakes surrounding the Pacific Ocean. |
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CONVERGENCE |
This refers to colliding plates or zones (regions) where this occurs. |
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DIVERGENCE |
This refers to plates breaking apart and moving away from each other or zones (regions) where this occurs. |
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TRANSFORM |
This refers to the type of movement or region where plates slide past each other. |
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TRENCH |
This is a deeper area of the ocean above a subduction zone. |
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SUBDUCTION |
This refers to the process of one plate moving beneath another. |
