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Chapter 3.2-3.6
| Term | Definition |
|---|---|
| Sediment | Small, solid pieces of material 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 or ice carry away bits of broken up rock. |
| Deposition | The process by which sediment settles out of water or wind carrying it. |
| Compaction | The process that presses sediments together. |
| Cementation | The process in which dissolved minerals crystallize and glue particles of sediment together. |
| Sedimentary Rock | Formed by layers of sediment being pressed together and then cemented over time. Used for tools and building, but is the most fragile rock type. |
| Metamorphic Rock | Formed by heat, pressure and chemical reactions. Commonly used in building and sculptures such as marble. |
| Igneous Rock | Formed by molten rock cooling and hardening into a solid. Granite, obsidian and pumice are examples. |
| Foliated | Parallel lines of layering in a metamorphic rock. Refers to grain arrangement. |
| Extrusive | An igneous rock on that erupted onto Earth's surface when it was formed. |
| Intrusive | An igneous rock that hardens beneath Earth's surface when it is being formed. |
| Rapid cooling | Results in fine-grained igneous rocks with small or no crystals. |
| Rock cycle | An ongoing process where rocks can transform from one form to another. |