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Plate Tectonics The Earth’s Crust in Motion… Earth’s Puzzle What plate do we live on? What plates do we border? Locating Plate Boundaries Types of Boundaries Divergent Convergent Transform A Divergent •plates are moving apart •new crust is created •Magma is coming to the surface B Convergent •plates are coming together •crust is returning to the mantle C Transform •plates are slipping past each other •crust is not created or destroyed A Divergent Continental crust rift valley B Convergent 2 continental plates mountain range C Transform Plates move against each other Stress builds up Oceanic crust midocean ridge 2 oceanic plates or oceanic + continental subduction Stress is released earthquake A Divergent B Convergent C Transform Features – Features – Features – Rift Valleys Mid-ocean ridges Mountain ranges (C-C) Trenches (O-O and O-C) Island Arcs (O-O) Volcanoes (O-O & O-C) Faults Earthquakes The Big Picture Key Terms convergent boundary divergent boundary transform boundary Subduction Subduction zone rift valley trench mid-ocean ridge continental crust oceanic crust mountain range Earthquake Benioff zone