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Science 6-2 practice

chapter 6 Terms

TermDefinition
Igneous rock Forms when magma or molten rock cools and hardens
Magma Forms when rock melts
Crystalline Full of crystals
Intrusive magma cools below ground and larger crystals can form
Extrusive lava that cools at the surface
Coarse-grained Granite rock
Fine-grained rhyolite rock
Porphyritic rock with a mix of large and small crystals, granite is a type
Glassy Obsidian rock
Vesicular Pumice rock
Felsic Forms from magma with high concentration of silica
Mafic Forms from magma with high concentration of iron and magnesium
Compaction Process by which sediments progressively loses its porosity due to the effects of loading
Cementation The binding together of particles or other things by cement
Chemical sedimentary rock Form by precipitation of minerals from water
Organic sedimentary rock Form from the accumulation and lithification of organic debris like leaves, roots and other animal or plant material
Clastic sedimentary rock Clast of fragment of geological detritus, chunks and smaller grains of rock broken off other rocks by physical weathering
Sorting Arranging systematically into groups
Angularity The quality of being angular
Created by: ethanxa10
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