The Rock Of Rock And Rock Essay

1053 Words Nov 22nd, 2015 5 Pages
The Rock Cycle The rock cycle is a concept used to explain how the three basic rock types are related and how they help processes Earth and how rocks change from one type of rock into another type of rock. Rocks change shape, form and type by a few different causes. One of the causes is by plate tectonic activity, movement of Earth’s surface in the present and the past. Another cause is by weathering, wear away or change the appearance or texture of by long exposure to the air. The last type of cause is the erosional processes, a type of weathering in which surface soil and rock are worn away through the action of glaciers, water, and wind. There are three classified types of rocks. They are classified based on how they form. The first form of rock is igneous. Igneous is a rock formed by the cooling and crystallization of magma at or below the Earth’s surface. The second form of rock is sedimentary. Sedimentary is a rock formed as a result of the weathering process by compaction or cementation of rock and mineral fragments or the precipitation of dissolved minerals. The third form of rock is metamorphic. Metamorphic are rocks that form as existing rocks that are exposed to intense heat and pressure over long periods of time. The first classification of rock is igneous rocks. They are formed by the solidification of molten rock material and there are two types of igneous rocks, intrusive igneous rocks and extrusive igneous rocks. Intrusive igneous rocks are crystallized…

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