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Little information about The layers of the earth
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LAYERS OF THEEARTH
Earth has 4 layers Crust Mantle Inner core Outer core
Crust
TWO KINDS OF CRUST Continental crust Oceanic crust
CRUST
Silicon---(28%) Silica(SiO2),(or Quartz)
Silicate ion(SiO4-)
Aluminum(8%) Iron(5%) Calcium(3.6%) Sodium(2.8%) Potassium(2.6%) And Magnesium(2%)
Mohorovic discontinuity
Named after Andrija Mohorovic (1857-1936)
The boundary between the crust and the mantle
Mantle
Very thick layer “Asthenosphere”
Core(Inner and Outer)
Mostly made of molten iron and nickel Responsible of Earth’s magnetic field
Rocks and Minerals
Kinds of rocks
Igneous
Rocks formed from magma that cooled and hardened
Sedimentary
Formed from sediments that accumulate and were compacted due to increase pressure
Metamorphic
Resulted from being exposed to high temperature and pressure and difference chemical reactions
Mineral resources
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