Restless Earth

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  • Restless Earth
    • The Earth  in cross-section
      • Lithosphere:  Continental crust, Oceanic crust, Upper mantle
      • Mantle: Asthenosphere, Lower Mantle
      • Core: Outer core, Inner core
    • The two types of crust
      • Continental crust make most Earth made granite
      • Oceanic crust thinner made rock basalt
      • The Earth  in cross-section
        • Lithosphere:  Continental crust, Oceanic crust, Upper mantle
        • Mantle: Asthenosphere, Lower Mantle
        • Core: Outer core, Inner core
    • How the Earth's tectonic plates move
      • Convection currents like lava lamp
      • materials move create movement crust create hotspot
    • Different types of plate boundary
      • constructive: rise magma split continental crust form new oceans
      • The two types of crust
        • Continental crust make most Earth made granite
        • Oceanic crust thinner made rock basalt
      • Destructive: subduction oceanic continental boundary collide
      • Conservative margins: no crust formed or destroyed
    • Different hazards and their causes
      • impact depend size  population,  vulnerability
      • volcanoes found hotspot conservative margins
      • Shield: gentle slopes fluid frequent Mauna Loa (hawaii,USA)
      • Composite/Strato: steep sided viscous/sticky flow infrquent Mt Pinatubo
    • Impact of Earthquakes
      • severity effected size depth  type material
      • impact vary strength distance epicentre warning time preparation
      • Different hazards and their causes
        • impact depend size  population,  vulnerability
        • volcanoes found hotspot conservative margins
        • Shield: gentle slopes fluid frequent Mauna Loa (hawaii,USA)
        • Composite/Strato: steep sided viscous/sticky flow infrquent Mt Pinatubo
      • Primar impact: immidiate effect property ppl
      • Secondary impacts: impact ppl property  after
        • Living with volcanoes
          • active, dominant, extinct
          • Mt St Helens 'dormant' erupt
          • Primar impact: immidiate effect property ppl
    • Living with volcanoes
      • active, dominant, extinct
      • Mt St Helens 'dormant' erupt
    • Prediction, warning and evacuation
      • Preparedness emergency plans service  evacuation plans disaster kits   strengthening buildings
      • Developed world buildings flexible deep foundations shock absorbers reduce weight roof
      • Response and relief in Haiti
        • Strongest quake 1770
        • 1.5 mil ppl homeless
        • 7.0 magnitude epicentre
        • 3 mil ppl in need
        • World vision give emergency shelter
        • Haiti poor need support

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