inorganic substance found naturally in the earth - mineral, something that is made of things that have never been alive - inorganic, the order of arrangement of particle that make up a mineral - crystal, mineral crystals form when melted rocks or hot gas - cool, a mineral that can be cut or polished for use is called - gemstone, the hardest mineral are - diamonds and rubies, Some minerals are also - metals, minerals are found on the  ________ of the earth or buried in ________ - earth / caves, how easily mineral resist scratching - hardness, the breaking of material along smooth straight lines into flat sheets  - cleavage, the breaking of a mineral unevenly in many directions - fracture, the color of a mineral you see - color, the color of the mark made when a sample is rubber on a harder surface - streak, the structure that results from orderly arrangement of the particle that make up the mineral - crystal structure, the way the mineral reflects light - luster, three ways people use gemstones - jewelry, arts, drills, Uses for minerals - toothpaste, drywall, and fertization , What is a Mohs scale - determines the hardness of minerals, igneous rocks - formed from cooled magma, sedimentary rock - formed when layes of sediment and organic material harden, metamorphoric rock - formed by heat and pressure deep below the earths crust, Example of igneous rock - obsidian, granite, pumice, examples of sedimentary rock - conglomerate and limestone, examples of metamophic rock - marble, shale, slate, The flood most likely involved - earthquake and volcanic activity, Rock - Hard natural substance made of one ormore material that contain organic materials, Geologist - classify rocks according to how they form, Coal - rocklike substance that forms from decayed plant matter , How did the flood contribute to formation of sedimentary rock - The waters could have stirred up the dirt.,

Science - Rocks

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