Plate boundary types • Divergent Plates – Plates move away from each other – Crust is created – Mid ocean ridge – rift valleys • Convergent Plates – Plates move toward each other – Crust is destroyed • Two types – Subduction » Oceanic-oceanic » Oceanic-continental – Mountain Building » Continental-continental • Transform Plates – Plates slide past each other in opposite direction • Crust is neither created nor destroyed