All Natural Hazards Flashcards

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What is a rift valley?
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A long, narrow valley lying between two normal geologic faults. Rift valleys usually form where the Earth’s lithosphere has become thin through extension associated with plate-tectonic processes.

What is a rift valley?
Why are volcanoes not found along conservative plate margins?
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This is because a conservative plate margin, sometimes known as a transform fault, is where two plates move past each other without direct collision.

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Why are volcanoes not found along conservative plate margins?
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 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 an example of two tectonic plates that form a constructive plate margin
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North American and Eurasian Plate, South American plate and African Plate, Pacific plate and Nazca plate and the Cocos plate and Pacific plate. 
Give an example of two tectonic plates that form a constructive plate margin




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