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Chapter7 Rocks and M
Word | Definition |
---|---|
Crystal | Solid material with atoms arranged in a repeating pattern |
Extrusive | Describes igneous rocks that have small or no crystals and form when melted rock cools quickly on Earth's surface |
Foliated | describes metamorphic rocks with visible layers of minerals |
Gem | rare, valuable mineral that can be cut and polished |
Igneous Rock | Intrusive or Extrusive rock that is produced when melted rock from inside Earth cools and hardens |
Intrusive | Describes types of igneous rocks that generally contains large crystals and forms when magma cools slowly beneath Earth's surface |
Metamorphic Rock | New rock that forms when existing rock is heated and squeezed. |
Mineral | Inorganic solid material found in nature that always hs the same chemical makeup |
Nonfoilated | Describes metamorphic rocks that lack distinct layers or bands |
Ore | Material that contains enough of a useful metal that can be mind and sold at a profit |
Rock | solid inorganic material that is usually made of two or more minerals and can be metamorphic,sedimentary, or igneous |
Rock Cycle | diagram that shows the slow, continuous process of rocks changing from one type to another |
Sedimentary Rock | A type of rock made from pieces of other rocks, dissolved minerals, or plant and animal matter that collect to form rock layers |