click below
click below
Normal Size Small Size show me how
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 |