Plate Margins Flashcards

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Some volcanoes occur in the middle of plates. What are these known as?
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Volcanic hotspots
Some volcanoes occur in the middle of plates. What are these known as?
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?
Describe the physical processes that happen at constructive plate margin.
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At a constructive plate margin magma rises between two tectonic plates. The plates move away from each other due to ridge push and slab pull. The magma cools to form a new plate. On land rift valleys form such as the East African rift valley. Where two oceanic plates move apart new islands can be formed e.g. Iceland.

Describe the physical processes that happen at constructive plate margin.
How can natural hazards be classified?
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  • Tectonic hazards
  • Atmospheric hazards
  • Geomorphological hazards
  • Biological hazards
How can natural hazards be classified?
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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