7:57 AM October 30, 2011Sanders Unit 2: Rocks and Minerals 2-4 Igneous Rocks.
Rocks Group 2
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Transcript of Rocks Group 2
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ROCKSROCKS
By, Alex Sestito, Matt Robbins, By, Alex Sestito, Matt Robbins, Mick Baker, Paul Hess, and Mick Baker, Paul Hess, and
Stephen GallianiStephen Galliani
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Igneous Rocks Igneous Rocks
Igneous rock is rock that was once melted Igneous rock is rock that was once melted and than cooled and hardened. Rocks and than cooled and hardened. Rocks that have been changed by heat or that have been changed by heat or pressure.pressure.
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Sedimentary RocksSedimentary Rocks
Sedimentary Rocks are made when Sedimentary Rocks are made when materials settle into layers and get materials settle into layers and get squeezed until they harden into rock.squeezed until they harden into rock.
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Metamorphic RockMetamorphic Rock
Metamorphic Rock is rock that has been Metamorphic Rock is rock that has been changed by temperature and pressure.changed by temperature and pressure.
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How Rocks are FormedHow Rocks are Formed
Rocks are formed by three different ways:Rocks are formed by three different ways:Melted rock can reach earth’s surface Melted rock can reach earth’s surface
through a volcano.through a volcano.Water and wind can break rocks into bits.Water and wind can break rocks into bits.Pressure and temperature causes rocks to Pressure and temperature causes rocks to
form.form.
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