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rocks and minerals

Acid rain- precipitation of relatively high acidity that is formed when airborn oxides of sulfer nitrogen combine moisture in the atmosphere
Conglomerate- a rock made of mineral and rock fragments
Crystal- a solid substance in which the particles are arranged in an orderly,repeatable pattern
Crystallization- the process by which crystals are formed
Cubic- a crystal form characterized by three equal axes at right angles to each other
Evaporation- the conversion of a substance from a liquid to a gaseous state
Fossil- the remains,impressions,or other evidence of things presserved in rock
Hardness- the resistance of the surface of a mineral to scratching by another substance
Hexagonal- a crystal form characterized by three equal lateral axes intersected at 60 degrees and a vertical axis of variable length and right angles
Igneous- a type of rock formed by the cooling and crystallization of molten materials
Indigneous- occurring naturally in a partticular place or region
Laser- light amplification by stimulated emission of radiation
Lava- molten rock that flows from volcanoes or Earth fissures
Luster- the way a mineral reflects light
Magma- the hot, liquid rock within the Earths crust
Metallic luster- describes a mineral that is usually dark in color, is always opaque,even on its thin edges,and shines like polished metal
Metamorphic- a type of rock formed when igenous, sedimentary or even other metamorphic rock, are subject to extreme heat or presure deep below the earth's surface.
Mineral- A naturally occuring solid, inorganic substance with a definite chemical composition and usually crystallin in form.
Mohs Scale of Hardness a scale that ranks the hardness of minerals relative to the hardness of other minerals
Monoclinic- a crystal form characterized by three unequal axes with one oblique intersection
Nonmetallic luster- desribes a mineral that is usually light colored and whose surface appears gassy, greasy, brilliant, pearly, silky, or dull
Orthorhombic- a crystal form characterized by three unequal axes at right angles to each other
Petrifaction- The process of petrifying, or becoming a fossil (also known as petrification).
Piezoelectric- a type of electric generated by applying pressure to crystalline substance such as quartz
Property- any equalty that serves to desribe or define an object,material, or relationship
Rock- A natural occuring inorganic substance usually comprised of a mixture of different minerals and other materials.
Sedimentary- a type of rock formed by the solidification of layers of sediment
Silicon- One of the most abundant elements on earth, its electric properties enable it to be used in electronic devices.
Streak- the color of the fine powder of a mineral obtained by scratching or rubbing the mineral against a pieceof unglazed cermamic tile.
Tetragonal- A crystal form characterized by three axes of right angles, of which only the two internal angles are equal.
Triclinic- A crystal form characterized by three unequal axes intersecting at oblique angles
Weathering- The discoloration or breakdown of rocks and minerals due to the action of water, the atmosphere, and organisms
Created by: GHeisinger5