The Structure of Earth.

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Presentation transcript:

The Structure of Earth

CRUST The thinnest, outermost layer of the Earth Only about 2-35mi thick Made mostly of rock and soil that is brittle (easily broken) Least dense layer in Earth’s geosphere Rocks are under oceans and on land Consists of land and ocean. The temperature of the crust typically varies; however the further down you dig through the crust, the temperature increases

MANTLE The dense, thick layer of rock just below the crust Earth’s thick middle layer made mostly of solid rock; makes it denser than the crust This layer is undergoes constant heat and pressure. Temperatures range between 680°f and 4532°f The heat and pressure causes rocks to move and bend within this layer About 1800 miles of a thick, dense layer of rock

OUTER CORE The only liquid layer of the Earth, molten lava Made of iron and nickel, in liquid form, no water Made up of molten lava It is about 1400 miles thick Temperatures typically around 3500-4300° f Scientists know this layer is made of liquid molten lava by studying what happens when earthquakes occur

INNER CORE Solid layer, center of the Earth Made up of iron and nickel It is about 780 miles in depth Temperatures can be as high as 10,000° f A dense ball of solid iron crystals.