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Rocks

TermDefinition
Igneous Rocks Formed from the cooling and solidification of magma or lava.
Intrusive Igneous Rocks Formed from magma, cools slowly, large crystals form.
Extrusive Igneous Rocks Formed from lava, cools quickly, small or no crystals form, may be vesicular (air bubbles).
Sedimentary Rocks Formed from sediments going through the WEDCC process.
Weathering First, rocks are weathered, or broken down into smaller pieces called sediments.
Erosion Second, sediments get eroded or carried by rivers.
Deposition Third, Rivers deposit or drop the sediments into larger bodies of water where they form layers.
Compaction Fourth, the weight of the layers and water compact, or squish the sediments together.
Cementation Last, dissolved minerals in the water cement or glue the sediments together.
WEDCC Weathering, Erosion, Deposition, Compaction, Cementation
Metamorphic Rocks Formed from heat and pressure.
Foliated Metamorphic Rocks Possesses ribbons / bands. Ex. if you cut a cake, you will see the "layers".
Non-foliated Metamorphic Rocks Does not possess ribbons / bands. Ex. a tiger has stripes on the outside... but on the inside, are there still stripes?
Created by: nicole.jackson
 

 



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