2 LESSON_Q1

• Plate Tectonic Theory


  Theory about the distribution of active volcanoes, earthquake epicenters and major mountain belts, which are visibly evident in the motion of the lithosphere
• Three types of plate boundaries

  • Divergent plate boundary
  • Convergent plate boundary
  • Transform fault plate boundary
• Divergent plate boundary


  Forces are pulling apart where the plates will move away from each other
• Divergent plate boundary


  • Interacting crust can be oceanic to oceanic or continental to continental
• Convergent plate boundary


  Forces will move toward each other and plates will collide
• Convergent plate boundary


  • Interacting crust can be oceanic to oceanic, oceanic to continental, or continental to continental
• Transform fault boundary


  Forces move passed each other or at same direction but at different rate, the plates will slide or grind past each other
• Transform fault boundary


  • Interacting crust can be continental to continental
• Three types of plate boundary

  • Divergent plate type boundary
  • Convergent plate type boundary
  • Transform fault plate boundary
• Divergent plate type boundary


  • A boundary that occurs along the spreading centers
  • Where plates are moving apart as the forces interacting are pulling or moving away from each other
  • Different geologic events will develop
  • Happens between the interaction of continental to continental crust and oceanic to oceanic crust
• Convergent plate type boundary


  • The interacting forces are moving toward or pushing each other thus causing the plates to collide
  • May occur between continental to continental, continental to oceanic and oceanic to oceanic crust
  • Several geologic events will also likely to occur
• Transform fault plate boundary

  • Boundaries at which plates move past one another horizontally in opposite directions or in the same direction but at different rates
  • Most of transform fault plate boundaries are found in the ocean basins, only few of which are found in the continents
• Types of Plate Boundaries

  • Divergent
  • Convergent
  • Transform
• Kinds of Crust


  • Continental to Continental
  • Oceanic to Oceanic
  • Continental to Continental
  • Continental to Oceanic
  • Oceanic to Oceanic
• Geologic events


  • Earthquake
  • Mid-Atlantic Ridge
  • New seafloor
  • Widening ocean basin
  • Rift valley formation to linear sea
  • Mountain ranges
  • Volcanoes
  • Trenches
  • Subduction process occur
  • Island arc
  • Zig-zag plate margins