Earth Science

Earth Science

1. Earth Layers

   • The Crust
     • Line layer we live on. 2 main types- Old (continential) and new (oceanic)
     • the continential is lighter and always rides above oceanic, when they collide
     • When plates collide the oceanic goes under and remelts- trenches volcanoes.
     • Oceanic+Continental plate.
   • Inner Core, Outer Core, Mantle, and Crust

2. New Oceanic Plate Forming

   • Hot mantle rising.
   • Spread the existing oceanic plate
   • Mantle rock melts (less pressure) forms new plate

3. Words needed for plate tectonics

   • Plate Tectoincs
     • Name for theory of earth being made of moving segments
   • Continental Drift
     • Theory on main old continental plates drifting
   • Subduction Zone
     • When a continental plate meets and oceanic. Oceanic drives under and remelts

4. Volcanoes

   • In NZ this would been the most well known activity associated with plate boundaries
   • Why do they Occur?

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