Page 95 - Science Course 2 (Book 2)
P. 95

Mo10-L3b: Why Tectonic Plates Move?





                                                                  transform boundary
                 Mo10-L3b        Why Tectonic Plates Move?
                                                                  the boundary between two plates that slide past
                                                                  each other.
                KEY CONCEPTS:
                1. What are the differences between divergent,
                    convergent, and transform plate boundaries?
                2. What causes tectonic plates to move on Earth’s
                     surface?




                            Vocabulary A-Z
                            Let us learn some vocabulary



                divergent boundary                                convection
                the boundary between two plates that move away    the circulation of particles within a material caused
                from each other.                                  by differences in thermal energy and density.

















                convergent boundary
                the boundary between two plates that move toward
                each other.                                       Let’s Begin


                                                                  Plate Boundaries

                                                                  Scientists describe the movement of tectonic plates,
                                                                  in terms of relative motion—how it moves in relation
                                                                  to another plate.

                                                                  As plates move relative to each other, they form
                                                                  different types of boundaries.

                                                                  The type of boundary depends on the relative motion
                subduction                                        of the plates.
                the process that occurs when one tectonic plate
                moves under another tectonic plate.





                                                                    Divergent      Convergent     Transform
                                                                    Boundary        Boundary       Boundary






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