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Plate Tectonics

Discover the theory of continental drift, plate boundaries, and landforms created by plate movements. Learn about Wegener's theory, Convection Currents, and examples like the East African Rift and Japan. Explore the forces and consequences of plate interactions.

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Plate Tectonics

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  1. Plate Tectonics Chapter 1

  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. Convection Currents The force responsible for plate movement is __________.

  4. 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.

  5. Plate Boundaries • Divergent Boundary – moving • Convergent Boundary – moving • Transform Fault Boundary – moving

  6. Divergent boundary of two continental plates. Creates a Example: _____________ East African Rift

  7. Convergent boundary of two oceanic plates. Creates an island arc and a _______. Example: Japan

  8. Convergent boundary of an oceanic plate and a continental plate. Forms a _______ mountain range and a ______. Examples: _______ or _______ Mts Andes Cascades

  9. Convergent boundary of two continental plates. Forms a ______ mountain range. Examples: ___________, Alps, ______________ Himalayas Appalachians

  10. Transform-fault boundary where the North American and Pacific plates are moving ____ each other. Example: ________________ in California San Andreas Fault

  11. 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 ____________ . an island arc

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