Rocks year 10

Rocks year 10 - Rocks Rocks Thereare3types ofrocks....

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Rocks
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Rocks There are 3 types of rocks. Igneous, metamorphic and  sedimentary. Some rocks have air bubbles because  of the way they are formed.  Rocks such as Millstone Grit have  these properties and are otherwise  known as Sedimentary Rocks Other rocks don’t have air bubbles,  these tend to have crystals Crystals have a more jagged form  (meaning they fit together more  easily) This means there’s less air bubbles  therefore its a denser rock Metamorphic and Igneous rocks  have these properties.
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Metamorphic Metamorphism means  "changed form".  The Changes occur  because of:  Heat  Pressure 
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How metamorphic rocks change Say a sedimentary rock is pushed down towards the earth’s mantle The magma heats it up and changes its structure Also the pressure can take part in this process. The pressure comes from rocks above and they get pushed down.
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This note was uploaded on 11/09/2011 for the course CHEM 201 taught by Professor Peterson during the Fall '11 term at BYU.

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Rocks year 10 - Rocks Rocks Thereare3types ofrocks....

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