Question | Answer |
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 |