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Unit 3 vocab robbie
Plate Tectonics
term | Definition |
---|---|
Asthenosphere | the region below the lithosphere, variously estimated as being from fifty to several hundred miles |
Subduction | the process by which collision of the earth's crustal plates results in one plate's |
Seafloor spreading | ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out. |
Mantle convection | |
Ridge push | |
Slab pull | |
Lava | the molten, fluid rock that issues from a volcano or volcanic vent. |
Magma | molten material beneath or within the earth's crust, from which igneous rock is formed. |
Tectonic plate |