Igneous rock - from volcanoes, sedimentary rock - layered rock, metamorphic rock - made under high temperature and presssure, intrusive igneous rock - formed inside a volcane, extrusive igneous rock - formed outside a volcano, magma - liquid rock, lava - magma from a volcano in air, compaction - pressing together of sediments to form sedimentarty rocks, cementation - over time water cements together rock layers, strata - layers of rock, foliation - the wavy patterns on metamorphic rock, claustic rock - sedimentary rocks with stones in them, weathering and erosion - breakdown of rocks by wind, gravity and water, shale - turns into slate under heat and pressure, limestone - turns intoi marble under heat and pressure, granite - turns into gneiss under heat and pressure, How to tell a sedimentary rock - look for layers, How to tell a metamorphic rock - look for wavy pattern of foliation,

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