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6th Earth Systems
TEKS 6.10A-C
| Term | Definition |
|---|---|
| geosphere | the solid part of Earth, including all the rocks, minerals, and physical structures that make up our planet's core, mantle, and crust. |
| inner core | the solid, innermost layer of Earth, made up of iron and nickel |
| outer core | he liquid layer of Earth's core, located between the mantle and the inner core |
| mantle | the thick, mostly solid layer of rock that lies between the Earth's crust and its outer core |
| crust | the outermost, solid layer of Earth, the thinnest layer of the Earth, divided into continental crust (thicker, less dense) and oceanic crust (thinner, more dense) |
| biosphere | the area of the earth where all life exists |
| hydrosphere | all the solid, liquid, and gas forms of water |
| atmosphere | the layer of gases that surround the planet |
| rock cycle | geological process that describes how the three main rock types continuously transform from one type to another over time |
| metamorphic rocks | are formed from rocks that are exposed to very high pressures and temperatures |
| igneous rocks | a type of rock formed when molten rock (magma or lava) cools and solidifies, |
| sedimentary rocks | rocks formed from deposition of sediments or pieces of once-living organisms |
| compaction | process of squeezing sediment particles together |
| cementation | process of gluing sediment particles together with minerals |
| magma | molten rock that is located beneath the Earth's surface |
| lava | molten rock that erupts and flows onto the surface through a volcano |
| weathering | process of breaking down rocks and minerals on the Earth's surface into smaller pieces (sediments) |
| erosion | moving sediments from one place to another by natural agents like wind or water |
| deposition | the laying down of sediments from erosion |