Download The Crust

The Crust Outermost layer Thinnest layer Con2nental Crust = land 5-­‐25 miles thick Oceanic Crust = under ocean 3-­‐5 miles thick Made up of two types of rock: Granite and Basalt •  Basalt = oceanic crust (more dense than con2nental crust) •  Granite = con2nental crust •  Divided into tectonic plates • 
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The Crust •  State of MaGer: Solid •  Made of Oxygen, Silicon, Aluminum •  Overall, 3-­‐25 miles thick The Mantle •  Thickest layer •  1,800 miles thick •  Layer of Earth between the crust and the core •  Crust & Upper Mantle = Lithosphere •  Rest of Upper Mantle = Asthenosphere •  Asthenosphere contains convec2on currents which cause the tectonic plates to move The Mantle •  Makes up about 83% of the Earth’s volume •  Average temperature = 3,000°C or 5,432°F •  Made mostly of magma •  Has more magnesium and less aluminum and silicon than the crust •  Is denser than the crust •  State of MaGer: Solid The Outer Core • 
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Located below the mantle State of MaGer: Liquid 1,400 miles thick 4,000-­‐5,000°C or 7,232-­‐9,032°F Made of liquid Nickel and Iron Second thickest layer of the Earth Responsible for Earth’s magne2sm. The Inner Core •  Located in the center of the Earth •  State of MaGer: Solid (due to extreme pressure) •  3,000,000 2mes the pressure than at sea level •  800 miles thick •  About 5,000-­‐6,000°C or 9,032 -­‐10,832°F •  Made of solid Iron and Nickel