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Chapter 8
8.3, 8.4, 8.5, 8.6 Rocks Types & Rock Cycle
Term | Definition |
---|---|
extrusive rock | igneous rock formed from lava |
intrusive rock | igneous rock formed from magma |
sediment | small, solid pieces that come from rocks or living things |
weathering | the effects of freezing and thawing, plant roots, acid, and other forces on rock. |
erosion | the process by which running water, wind, gravity, or ice carries broken up rock and soil |
deposition | the process by which sediment settles out of water or wind carrying it |
compaction | the process pressed sediment together |
cementation | the process in which dissolved minerals crystallize and glue particles of sediment together |
clastic rock | sedimentary rock that is formed by squeezing sediment together |
organic rock | forms in an area that the remains of plant and animals are deposited in layers |
chemical rock | forms when minerals dissolved in a water solution crystallize |
foliated | describes the thin, flat layering found in most metamorphic rocks |
rock cycle | a series of processes that occur on earths surface and in the crust and mantle that slowly change rocks from one kind to another |