rock - solid material made of one or more minerals, mineral - a nonliving solid material made up of only ONE thing, physical attributes - color, texture, luster, hardness, texture - how something feels (grainy, smooth, rough), luster - how shiny a material is, hardness - a measure of how difficult is is to scratch or cut a material , mohs scale - a measure of hardness where 0 is very soft and 10 is very hard, weathering - the breakdown of rocks on Earth's surface, erosion - when smaller pieces of soil and rock are moved to to a new location, deposition - when pieces of soil and rock are left in a new place , soil - the upper part of the Earth's crust where plans grow,

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