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The Rock Cycle

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amaris garcia

on 28 October 2013

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Transcript of The Rock Cycle

The Rock Cycle
Amaris Garcia
EDU 220 - C

What is the Rock Cycle?
It is a model that describes the formation, breakdown, and reformation of a rock as a result of sedimentary, igneous, and metamorphic processes
Rocks
Rocks - are made up of minerals
They come in different colors, shapes, textures, and sizes
The 3 types of rocks are:
Igneous
Sedimentary
Metamorphic
Igneous
Sedimentary
Metamorphic
Basalt
Sandstone
Marble
Magma
Magma
Hot, molten rock deep inside earth
Do not Confuse magma with lava.
Lava is when magma is above ground on the surface
Cooling
When a volcano erupts magma cools and begins to form igneous rocks
Igneous Rock
Igneous Rock
Are formed when magma cools and hardens
Granite
Obsidian
Basalt
Melting
When the igneous rock is exposed to heat, it melts and turns back into magma
Weathering and Erosion
Through wind and water, rocks are washed away and eroded.
Sediment
Sediment
Loose pieces of minerals and rocks
Compaction and Cementing
Accumulated sediment is pressed together to form sedimentary rocks
Sedimentary Rock
Sedimentary Rock
Particles of rocks, minerals, or animal or plant material combined to form a rock
Conglomerate
Sandstone
Limestone
Weathering and Erosion
Through wind and water, rocks are washed away and eroded.
Heat and Pressure
When heat and pressure are added to a sedimentary rock it turns into a metamorphic rock
Metamorphic Rock
Metamorphic Rock
A rock that is completely changed due to heat and pressure
Examples of Metamorphic Rocks
Gneiss
Marble
Quartzite
Melting
A metamorphic rock can turn back into magma
Weathering and Erosion
Through wind and water, metamorphic rocks can be washed away and eroded to become sediments
Heat and Pressure
Through heat and pressure an igneous rock can become a metamorphic rock
Do Not Forget!
Rocks continually change from one type of rock to another
The elements in a rock are never created or destroyed
Rocks are frequently recycled
There are different melting temperatures for different compositions of magma. But usually they are all molten at about 1200 degrees Celsius.
Full transcript