Geology 8th Vocab
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| A naturally formed inorganic solid that has a repeating three-dimensional structure | Mineral
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| A mass of hard consolidated mineral matter | Rock
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| The process by which water, ice, wind and heat act to breack down rocks | Weathering
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| The process by which wind, water, ice and gravity remove and transport material from one place to another | Erosion
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| The act of depositing and laying down of matter by natural process | Deposition
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| The sinking of regions of Earth's crust to lower elevations | Land subsidence
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| Broken down pieces of rock and minerals such as sand | Sediment
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| Rock that forms when sediment is compacted and or cemented together | Sedimentary rock
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| Rock that forms when hot liquid rock, lava or magma, cools and hardens into rock | Igneous rock
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| Rock that forms when existing rock is heathed and squeezed under exteme heat and pressure deep inside the Earth | Metamorphic rock
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| Hot, liquid rock material | Lava/Magma
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| The theory that the Earth's lithosphere (crust) is divided into tectonic plates that move around on top of the asthenosphere; the motions of tectonic plates | Plate/Tectonics
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| The theory that continents drift apart from one another and have done so in the past | Continental Drift
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| The process by which new ocean floor is forms at mid-ocean ridges as tectonic plates are pulled away from each other. | Sea Floor Spreading
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| The boundary between two colliding tectonic plates that form mountains or trenches | Convergent Boundaries
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| The boundary between two tectonic plates that are moving away from eachother; rift zone or ridge | Divergent Boundaries
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| The boundary between two tectonic plates that are sliding pst each other forming faults | Transform Boundaries
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| The region where oceanic crust (lithosphere) sinks down into the asthenosphere at convergent boundaries | Subduction Zones
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| Maps that show the physical features and relief (lines of surface elevations) of a region of land | Topographic Maps
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| Theory that Earth's lithosphere (crust) is divided into tectonic plates that move around on top of the asthenosphere. | Plate Tectonics
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