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Metamorphic Rocks Part 1 BY: AMANDA, GARDA, AND ISABELLA What is a metamorphic rock? A rock is any rock that forms from another rock as a result of changes in heat or pressure. Some types of metamorphic rocks are marble, slate, gneiss, schist, and quartzite. How do other rocks differ from metamorphic? Metamorphic rocks differ from other rocks because metamorphic is formed when heat and pressure is applied to the rock, igneous is formed by the cooling of magma, and sedimentary is formed by compaction and cementing of layers. How can metamorphic rocks differ in appearance? Foliated metamorphic rocks such as gneiss, phyllite, schist, and slate have a layered or banded appearance that is produced by exposure to heat and directed pressure. Non-foliated metamorphic rocks such as hornfels, marble, quartzite, and novaculite do not have a layered or banded appearance. Review Questions PLEASE RAISE YOUR HAND! Were you paying attention? Prove it. Do you understand what a metamorphic rock is? What is it? What is one example of metamorphic rock that is normally used for floors, counters, and tables? Images of Metamorphic Rocks