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Layers of the Earth

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by

Lara Herbst

on 16 August 2013

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Transcript of Layers of the Earth

Earth
Layers
Crust
The Earth's Crust is the outer layer of the earth that we live on. It is the thinnest layer of the earth, and is only about 32 kilometers deep. The Earth's crust consists of two types of rock: Granite, and Basalt. The crust above water mainly has Granite in it, while underwater crust is mostly made of Basalt. The temperature of the crust can vary between air temperature, to 871.11 degrees Celsius.
Mantle
The Mantle is just under the crust, and is the biggest layer of the Earth, 2896.81200 kilometers thick. The part of the Mantle closest to the crust, is about 871.11 degrees Celsius, while the part furthest from the crust, is about 2204.4 degrees Celsius. The Mantle consists of melted rock.
Outer Core
The outer core, is around the inner core, under the Mantle. The Outer Core is around 2253.07600 kilometers deep, and consists of liquid iron and nickel. The temperature of the Outer Core, is between 2204.4 and 4982.2 degrees Celsius.
Inner Core
The Inner Core is the smallest, but hottest layer of the Earth, reaching 4982.2 degrees Clesius! The Inner Core is only 1287.47200 kilometers deep, but is so hot, that all the metal, instead of being liquid, the metal is compressed, and is solid.
of the
Tectonic Plates
Tectonic Plates are big plates, made of rock, floating on top of the Mantle, just under the Crust. When Tectonic plates move, they sometimes collide, moving the crust, and making cracks, causing the Earth to move under us, also known as, Earthquakes. Tectonic plates moving, also cause Volcanic eruptions, and tsunamis, because, if the plates collide underwater, one is pushed under the other, and water is sucked into the gap, causing the tide to quickly move out, and, sometimes, the plates collide, through the gap, comes Lava, also known as Magma. The lava shoots out of the gap, lying on the ground, next to the opening. This, is how a volcano is formed.
Rock on!
There are many types of rocks on the planet. There are Igneous Rocks, Sedimentary Rocks and Metamorphic Rocks.
Igneous rocks:
There are 11 types of Igneous rocks: Pegmatite, Andesite, Peridotite, Diorite, Pumice, Gabbro, Rhyolite, Obsidian, Scoria, Welded Tuff, and Basalt, the rock that makes up the underwater part of the Crust.
Sedimentary rocks:
There are 13 types of Sedimentary rocks: Breccia, Breccia, Chert, Oil Shale, Coal, Rock Salt, Sandstone, Conglomerate, Dolomite, Shale, Flint, Iron Ore, which the Inner, and Outer core is partly made of.
Metamorphic rocks:
There are 10 types of Metamorphic rocks: Phyllite, Amphibolite, Gneiss, Quartzite, Hornfels, Schist, Marble, Slate, Novaculite and Soapstone
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