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Earth as a Planet (Earths interior (Make up of the interior of the Earth…

- - - - less than 1% of earth by mass
        Oceanic (mafic) and continental (felsic)
    - - hot ultramafic rocks - 68% of Earth's mass
    - - mostly iron metal - 31% of the earth
  - - - Seismic waves told us that there was solid rock
    - - Heat transfers from hot to cold
      - Transfers heat from core to mantle
- - - - Two theories
        
        The convection in the core has become chaotic and causes the poles to switch.
        
        An astroid impaction could cause a disturbance in the force
- - - - Faster wave, can travel through everything
    - - Second wave, Can only travel through solid.