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Classifying Rocks

TermDefinition
Cementation A process whereby compacted sediments bind and stick together and turn into rock
Compaction A process whereby sediments pack, crush, and settle under the action of gravity and pressure from overlying layers
Crystal Formation Geometric shape of a mineral that reflects its internal crystalline arrangement of atoms
Hardness A measure of scratch resistance of various minerals through the ability of a harder minerals to scratch a softer minerals for identification (Known as Mohs Hardness Scale)
Igneous Rock Rock formed when heated magma or lava cools and hardens
Lava A result of molten rock material pushed to Earth's surface by volcanic action
Luster The way the surface of a mineral reflects light; either metallic or non-metallic such as silky, dull, glassy, or resinous
Magma Melted rock material beneath Earth's surface
Metamorphic Rock Rock deep within Earth's crust that has been exposed to extreme heat and pressure causing changes to its appearance, structure, and composition
Mineral A naturally formed, inorganic solid that has a specific chemical formula and repeating three-dimensional structure
Sedimentary Rock Rock formed when sediments deposited in layers, compact and cement together under pressure, over long periods of time
Streak The color of a mineral in powdered form
Created by: jennychapates
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