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Rocks Minerals 2
Rocks & Minerals Week 2 Vocabulary
Question | Answer |
---|---|
grains | the particles of minerals or 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 rock's grains |
igneous rock | rock that forms from the cooling of molten rock at or below Earth's surface |
sedimentary rock | rock that forms when rock particles or plant and animal remains are pressed and cemented together |
metamorphic rock | rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions |
extrusive rock | igneous rock that forms from lava ON Earth's surface |
intrusive rock | igneous rock layer that forms when magma hardens BENEATH Earth's surface |
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 in one mass |
erosion | the process by which water, ice, wind, or gravity moves weathered rock or soil |
deposition | process in which sediment is laid down in new locations |
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 |
foliation | the repetitive straight or wavy layering of mineral grains in a metamorphic rock giving it a striped appearance |