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Microsoft Office PowerPoint 97-2003 Presentation cut ups

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					                         Conservative
  Continental Crust          Earthquakes            San Andreas Fault



   Oceanic Crust        Sliding past each other       No Volcanoes



No crust is formed or                              Plates get stuck and
     destroyed                                    when move suddenly =
                                                        earthquake

 Conservative plate                               Pacific Plate and North
     boundary                                         American Plate
                       Constructive
 Constructive Plate    Moving away from each    Eurasian Plate and
     Boundary                  other           North American Plate


   Oceanic Crust        Gentle Earthquakes      Mid-Atlantic Ridge



   Oceanic Crust                               Ocean Trenches and
                                               Islands created e.g.
                                                     Iceland

Molten Magma escapes                                Volcanoes
 creating new crust
     “Construct”
                           Destructive
 Crust melts and then     Strong Earthquakes    Moving Towards each
rises to form volcanoes                                other


  Destructive Plate        Violent Volcanoes       Oceanic Crust
     Boundary


Nazca Plate and South                          Oceanic crust is forced
   American Plate                              under continental crust


  Continental Crust                             Plates get stuck and
                                               pressure is released as
                                                    earthquakes
                            Collision
    Cannot sink         Forms fold mountains       Small earthquakes
                           e.g. Himalayas


    No Volcanoes        Crust is pushed up and      Pushing together
                                 folds                 “colliding”


Indo-Australian Plate                               Continental Crust
 and Eurasian Plate


  Continental Crust                              Collision Plate Boundary
Conservative
Constructive
Destructive
Collision

				
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