2012年10月24日星期三

rock cycle

ROCK CYCLE
       The rock cycle is natural processes of rock change from different kinds of rock. The magma move up through the volcano change to the lava get cooling become the Igneous rock. The Igneous rock was through the weathering and erosion become the sediments. The sediments are compaction,then they glue all thing together become sedimentary rock. The sedimentary rock get heat and pressure becomes the metamorphic rock. The Mentamorphic rock through solid to liquid by heat to the lava. The rock cycle never stop.


ROCKS


Metamorphic rock - rock by heat or pressure
 

Magma- melting rock inside the earth

 Solidification- to become solid,very heat

Igneous rock- rocks that from when magma become cool and solid.
 
 Weathering process of breaking rocks into small peaces.
 Erosion- process of when materials are moved by weather

 Sediment- rock peaces

 Compaction- process of when the piece of rock getting together.

 Cementation- process when the piece of rock glue each other

 Sedimentary rock- from by another piece of rock running by water getting each other



ROCK TYPES
Sedimentary rock
Clatic - from by broken piece of rock and running with water meet with other piece of rock then stick together

 Crystalline - from by chemical make up

 Bioclastic - form in same way with clastic but it consisting with dead animals

 Igneous rock
Intrusive inside of volano make big crystals
 Extrusive - outside of volano make small ctystal

 Metamorphic rock
Foliatedoutside of a metamorphic rock has a line

 Non-Foliated - ouside of a metamorphic rock does not have a line

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