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Ch 2.3, 2.4, 2.5,2.6
Ch 2.3, 2.4, 2.5, 2.6 Types of Rocks and Rock Cycle
| Term | Definition |
|---|---|
| extrusive rock | igneous rock that forms from lava on Earth's surface |
| intrusive rock | igneous rock that forms when magma hardens beneath Earth's surface |
| sediment | small, solid pieces of material that comes from rocks or the remains of organisms, earth materials deposited by erosion |
| weathering | the chemical and physical processes that break down rock and other substances |
| erosion | the process by which water, ice, wind, or gravity moves weathered particles of rock and soil |
| deposition | process in which sediment is laid down in new locations |
| compaction | the process by which sediments are pressed together under their own weight |
| cementation | the process by which dissolved minerals crystallize and glue particles of sediment together |
| clastic rock | sedimentary rock that forms when rock fragments are squeezed together under high pressure |
| organic rock | sedimentary rock that forms from remains of organisms deposited in thick layers |
| chemical rock | sedimentary rock that forms when minerals crystallize from a solution |
| foliated | term used to describe metamorphic rocks that have grains arranged in parallel layers or bands |
| rock cycle | a series of processes on the surface and inside Earth that slowly changes rocks from one kind to another |