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Elective Geography Secondary 3 Express (New)- Plate Tectonics 3
 

Elective Geography Secondary 3 Express (New)- Plate Tectonics 3

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    Elective Geography Secondary 3 Express (New)- Plate Tectonics 3 Elective Geography Secondary 3 Express (New)- Plate Tectonics 3 Presentation Transcript

    • + Elective Geog (New) Secondary 3 E Week 4: Living with Tectonic Hazards
    • + 2 Lesson Outcomes  By the end of the lesson, we will be able to  describe the global distribution of tectonic plates and  types of plate boundaries.
    • + 3 Jig Saw Puzzle  Eachenvelope contains a cut out world map which shows the names of plates and their boundaries.  Inyour groups, try to piece together your jigsaw pieces and stick it onto a piece of paper.
    • + 4  How would you describe the pieces of the jigsaw?  What do the lines represent?  Which continent do we live in?  What observations can you make about the plate and the related continent that we live in?
    • + 5 Important Note!  Plates are NOT continents  Plates include both continental and oceanic crust.
    • + 6 Types of Plate Boundaries
    • + 7 Different types of plate boundaries  Divergent: where plates move away from each other  Convergent: where plates move towards each other  Transform: where plates move past each other
    • + 8 Note areas with earthquakes & volcanic activities
    • + 9 Handout: KQ1 SH3a
    • + 10 Divergent Plates  Areaswhere two plates move away from each other  Magma moves upward to the surface where it cools to form new oceanic crust along these boundaries  Oceanic-oceanic  Continental-continental
    • + 11 Oceanic-oceanic At various points along the ridge, magma The newly formed (youngest) rocks are builds up above the ocean to form volcanic closest to the middle of the ridge/plate islands. boundaries. Magma rises at the zone of New sea floor is formed when the magma divergence/spreading zone to form a ridge of Magma rises from the mantle to fill the gap cools and solidifies. This process is called new ocean floor called mid-oceanic ridge. between the plates as they diverge. sea-floor spreading.
    • 12
    • + 13 Oceanic-oceanic
    • + 14 Complete the following:
    • + 15 Continental-continental
    • + Elective Geog (New) Secondary 3 E Week 4: Living with Tectonic Hazards
    • + 17 Recall  Types of Plate Boundaries?  What must you remember?  Drawing  Direction of Plate Movement  Plates Involved  Resulting Landform  Example
    • 18
    • 19armanalluwie.blogspot.com
    • + 20 Continental-continental How to draw? Pg 23
    • + 21 Rift valleys and Block mountains  A fault  Fracture in the rocks along which the rocks are displaced  Rift Valley  Is a valley with steep sides that is formed when the sections of the crust extend along fault lines  Block Mountain  A block of land with steep sides
    • + 22 Afar Triangle, Triple Divergent Triangle
    • 23armanalluwie.blogspot.com
    • 24armanalluwie.blogspot.com
    • 25http://www.youtube.com/watch?v=ic54PSuQwLE