Hazards and Structure of the Earth Flashcards

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What are the characteristics of the outer core?
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The layer surrounding the inner core. A liquid layer of iron and nickel.
What are the characteristics of the outer core?
Give 2 characteristics of oceanic crust.
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  • More dense than continental crust
  • Heavier than continental crust
  • Younger than continental crust
  • Thinner than continental crust.
Give 2 characteristics of oceanic crust.
Give two possible reasons why tectonic plates move.
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Convection currents & Slab pull (+ ridge push).
Give two possible reasons why tectonic plates move.
What is the structure of the Earth?
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From the centre:

  • Inner core
  • Outer core
  • Mantle
  • Crust
What is the structure of the Earth?
What is the name of the upper portion of the mantle?
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The asthenosphere

What is the name of the upper portion of the mantle?




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