Plate Margins Flashcards

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Describe the global distribution of volcanoes and earthquakes
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Earthquakes are found along all types of plate margins. Volcanoes, however, only occur at constructive and destructive plate margins. Volcanoes are also found away from plate margins at volcanic hot spots such as Hawaii in the Pacific Ocean.

Describe the global distribution of volcanoes and earthquakes
Describe the physical processes that happen at a destructive plate margin.
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When oceanic and continental plates collide the denser oceanic plate subducts the continental plate and enters the mantle where it melts. Magma can rise through the lithosphere and erupt as lava through volcanoes. As the oceanic plate subducts, it gets stuck due to friction. Pressure builds up until it is released as an earthquake.
Describe the physical processes that happen at a destructive plate margin.
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.
What is the lithosphere?
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The rigid layer formed by the crust and upper mantle.

What is the lithosphere?
Identify the type of volcano that form on destructive plate margins
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Composite volcano
Identify the type of volcano that form on destructive plate margins




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