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Summary Table for Three Types of Plate Boundaries Plate Boundary Type of movement occurring at this boundary…. This boundary is also referred to as…. plates move apart at mid-ocean ridges Constructive boundaries plates collide Destructive boundaries plates slide past one another Conservative boundaries Examples where this type of boundary is found…. 1. Why are divergent boundaries referred to as “constructive” boundaries? 2. Why are convergent boundaries referred to as “destructive” boundaries? 3. Why are strike-slip boundaries referred to as “conservative” boundaries? Summary Table for Three Types of Plate Collisions Oceanic Plate Oceanic Plate Continental Plate vs. vs. vs. Continental Plate Oceanic Plate Continental Plate plate Younger, dense Plates fold upward and continent moves over plate plate moves over plate thickens plate is forced , more dense plates are into the mantle in the plate is subducted too light to be subducted subduction zone Volcanoes form island arcs on Volcanic mountain ranges form Large mountains form along on plate plate boundary plate Deep-sea trenches form on plate (seafloor) Examples: Deep-sea trenches form on plate (seafloor) Examples: Appalachians formed between African, Eurasian, and North American Plate during the last Pangaea Examples: What type of boundary is associated with these different types of plate collisions?