تکتونیک

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تکتونیک

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تکتونیک

  1. 1. Plate Tectonics Chapter 17
  2. 2. Continental Drift _________ proposed the theory that the crustal plates are moving over the mantle. This was supported by fossil and rock type evidence; also matching of coastline shapes. Wegener
  3. 3. Convection Currents The force responsible for plate movement is __________.
  4. 4. Plate Boundaries <ul><li>The following two slides show maps of the current major plate boundaries and their relative motions. </li></ul><ul><li>You should be able to describe various landforms created by different plate movements. </li></ul>
  5. 7. Plate Boundaries <ul><li>Divergent Boundary – moving _____ </li></ul><ul><li>Convergent Boundary – moving ________ </li></ul><ul><li>Transform Fault Boundary – moving ________________________ </li></ul>apart together sideways past each other
  6. 8. Divergent boundary of two continental plates. Creates a __________. Example: _____________ rift valley East African Rift
  7. 9. Convergent boundary of two oceanic plates. Creates an ________ and a _____. Example: _____ island arc trench Japan
  8. 10. Convergent boundary of an oceanic plate and a continental plate. Forms a _______ mountain range and a ______. Examples: _______ or _______ Mts volcanic trench Cascades Andes
  9. 11. Convergent boundary of two continental plates. Forms a ______ mountain range. Examples: ___________, Alps, ______________ folded Himalayas Appalachians
  10. 12. Transform-fault boundary where the North American and Pacific plates are moving ____ each other. Example: ________________ in California past San Andreas Fault
  11. 13. Plate Boundaries Review <ul><li>Places where plates move apart are called _____________ boundaries. </li></ul><ul><li>When continental plates diverge a ___________ is formed. </li></ul><ul><li>When two oceanic plates converge what is created? _________________ </li></ul><ul><li>The Appalachians formed mainly from continental plate collisions and therefore are a __________ mountain range. </li></ul><ul><li>The force moving the plates is ____________ . </li></ul>Convection currents divergent rift valley an island arc and a trench folded

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