تکتونیک
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تکتونیک

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تکتونیک

تکتونیک

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    تکتونیک تکتونیک Presentation Transcript

    • Plate Tectonics Chapter 17
    • 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
    • Convection Currents The force responsible for plate movement is __________.
    • Plate Boundaries
      • The following two slides show maps of the current major plate boundaries and their relative motions.
      • You should be able to describe various landforms created by different plate movements.
    •  
    •  
    • Plate Boundaries
      • Divergent Boundary – moving _____
      • Convergent Boundary – moving ________
      • Transform Fault Boundary – moving ________________________
      apart together sideways past each other
    • Divergent boundary of two continental plates. Creates a __________. Example: _____________ rift valley East African Rift
    • Convergent boundary of two oceanic plates. Creates an ________ and a _____. Example: _____ island arc trench Japan
    • Convergent boundary of an oceanic plate and a continental plate. Forms a _______ mountain range and a ______. Examples: _______ or _______ Mts volcanic trench Cascades Andes
    • Convergent boundary of two continental plates. Forms a ______ mountain range. Examples: ___________, Alps, ______________ folded Himalayas Appalachians
    • Transform-fault boundary where the North American and Pacific plates are moving ____ each other. Example: ________________ in California past San Andreas Fault
    • Plate Boundaries Review
      • Places where plates move apart are called _____________ boundaries.
      • When continental plates diverge a ___________ is formed.
      • When two oceanic plates converge what is created? _________________
      • The Appalachians formed mainly from continental plate collisions and therefore are a __________ mountain range.
      • The force moving the plates is ____________ .
      Convection currents divergent rift valley an island arc and a trench folded