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Mrs. P's Rock Vocab
Rocks
| Term | Definition |
|---|---|
| rock forming mineral | any of the common minerals that make up most of the rocks of Earth's crust. |
| granite | a usually light colored igneous rock that is formed in the continental crust |
| basalt | a dark, dense igneous rock with a fine texture found in oceanic crust |
| grain | the particles of minerals and other rocks that give a rock its texture |
| texture | the look and feel of a rock's surface, determined by the size, shape, and pattern of a rocks's grains |
| igneous rock | a type of rock that forms from cooling of molten rock at or below the surface |
| sedimentary rock | a type of rock that forms when particles from other rock or the remains of plants and animals are pressed and cemented together |
| metamorphic rock | a type of rock that forms from an existing rock that is changed by heat and pressure or chemical reactions |
| 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 come from rocks or the remains of organisms; eath materials deposited by erosion |
| weathering | the chemical and physical process 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 sedidments are pressed together under their own weight |
| cementation | the process by which dissolved minerals cystallize and glue particles of sediment together into one mass |
| 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 of Earth that slowly changes rocks from one kind to another |