Plate Tectonics

CONSTRUCTIVE plate boundary

• Two plates move apart
• <- ->
• New oceanic crust is formed
  • Mid Ocean Ridges
• Volcanic activity = common

DESTRUCTIVE plate boundary

• Oceanic crust moves towards continental crust
• --> <--
• The oceanic crust then subducts
• @ the subduction zone b/c of convection currents
  • Deep sea trenches
• Volcanic activity = common

COLLISION plate boundary

• Two continental plates move towards each other
• --> <--
• Neither can sink, so fold up
  • Fold Mountains

CONSERVATIVE plate boundary

• Two plates slide past each other
• <--
• -->
• Land neither created or destroyed
• Earthquakes = common