Our Earth

Cards (11)

  • Structure of The Earth:
    A) crust
    B) mantle
    C) outer core
    D) inner core
  • Crust:
    thin and solid
  • Mantle:
    • move slabs of crust called plates - convection currents
    • semi molten
  • Outer Core:
    liquid iron and nickel
  • Inner Core:
    • solid iron and nickel - due to pressure
    • 5500 degrees celsius
  • Plate Boundary:
    boundary between 2 tectonic plates
  • Destructive/Convergent Plate Boundary:
    • 2 plates pushing together
    • volcanoes and earthquakes
  • Constructive/Divergent Plate Boundary:
    • 2 plates move apart from eachother
    • lava flows, volcanoes, earhtquakes
  • Constructive/Transform Plate Boundary:
    • 2 plates slide alongside eachother
    • earthquakes
  • Why do people live near tectonic plates?
    Environmental:
    • soils are fertile
    economical:
    • attract tourists - jobs
    • minerals found - mining jobs
    • cheaper living
    • cheap geothermal energy
    Social:
    • people don't want to leave loved ones
    • buildings are designed with disasters in mind
    • community is important
    • people think risk level is low
    • people think there are adequate warning
  • Managing Volcanic Risks:
    Planning:
    • deciding what to do in the future
    Preparation:
    • acting on what you planned
    Prediction:
    • guessing based on other events