Rocks and Minerals

Question Answer
Acid Rain Precipitation of relatively high acidity that is formed when airborne oxides of sulfur and nitrogen combine with 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 living things preserved 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 at right angles.
Igneous A type of rock formed by the cooling and crystallization of molten materials.
indigenous Occuring naturally in a particular place or region.
Laser Light Amplification by Stimulated Emission of Radiation.
Lava Molten rock that flows from volcanos or Earth fissures.
Luster The way a mineral reflects light.
Magma The hot' liquid rock within the Earth's 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 igneous, sedimentary, or even other metamorphic rocks are subjected to extreme heat and/or pressure deep below the Earth's surface.
Mineral A naturally occuring,solid,inorganic substance with a definite chemical compisition and usually crystalline 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.
Non Metallic Luster Describes a mineral that is usually light color and whose surface appears glassy,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 petrifaction)
Piezoelectric A type of electicity generated by applying pressure to a crystalline substance such as quartz.
Property Any quality that serves to describe or define an object, matierial or relationship.
Rock A naturally occuring inorganic solid usually comprised of a mixture of different minerals and other materials.
Sedimentary A type of rock formed by the solidifacation layers of sediment.
Silicon One of the most abundant elements on earth; It's electrical properties enable it to be used in electric properties.
Streak The color of a fine powder of a mineral obtained by scratching or rubbing.
Tetragonal A crystal form characterized by three axes at right angles which only the two lateral 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, atmosphere, andorganisims.

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