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6th Grade Ch. 1 Sec. 5 Theory of Plate Tectonics
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6th Grade Ch. 1 Sec. 5 Theory of Plate Tectonics

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  • 1. Ch. 1 Sec. 5 Theory of Plate Tectonics
  • 2.  
  • 3. Earth’s Lithospheric Plates
  • 4. separate sections that the lithosphere is broken into plates
  • 5.  
  • 6.
    • driven by convection currents in mantle
    • states that pieces of Earth’s lithosphere
    • are in slow, constant motion
    • geological theory
    Plate Tectonic Theory
  • 7.
    • The continents fit together like pieces of a jigsaw puzzle.
    Plates moving animation
  • 8. 3 kinds of plate boundaries 1. Transform boundary 2. Divergent boundary 3. Convergent Boundary
  • 9. Types of Plate Boundaries
  • 10. 1. transform boundary
    • 2 plates slip past each other
    • move in opposite directions
    • earthquakes occur frequently here
  • 11. transform boundary
  • 12. 2. divergent boundary
    • 2 plates move apart
    • most occur @ mid-ocean ridge
    • when on land- forms rift valley
  • 13. divergent boundary
  • 14. 3. convergent boundary
    • 2 plates converge (come together)
    • result= collision
    • density determines which plate comes out on top
  • 15. convergent boundary
  • 16.  
  • 17.
    • 225 million years ago-
    • Pangaea began to break apart
  • 18. Let's review
  • 19. transform boundary
    • 2 plates slip past each other
    • move in opposite directions
    • earthquakes occur frequently along these boundaries
  • 20. convergent boundary
    • 2 plates converge (come together)
    • result= collision
    • density determines which plate comes out on top
  • 21. divergent boundary
    • 2 plates move apart
    • most occur at mid-ocean ridge
    • when on land- forms rift valley
  • 22. separate sections that the lithosphere is broken into plates

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