All Natural Hazards 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?
Give one reason why the incidence of natural hazards is increasing.
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Reasons include:

  • Climate change
  • Deforestation
  • Urbanisation
  • Population increase
Give one reason why the incidence of natural hazards is increasing.
Explain ridge push and slab pull as a cause of plate movement.
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Ridge push magma rises as the plates move apart. The magma cools to form new plate material. As it cools It becomes denser and slides down away from the ridge. This causes other plates to move away from each other.
Slab pull – The denser plate sinks back into the mantle under the influence of gravity. It pulls the rest of the plate along behind it.
Explain ridge push and slab pull as a cause of plate movement.
Give an example of two tectonic plates that form a conservative plate margin.
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North American and Pacific plates, Cocos and Nazca plates, Arabian and Indo-Australian plates and the African and Eurasian plates.
Give an example of two tectonic plates that form a conservative plate margin.
What is the lithosphere?
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The rigid layer formed by the crust and upper mantle.

What is the lithosphere?




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