Plate Margins Flashcards

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What is the lithosphere?
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The rigid layer formed by the crust and upper mantle.

What is the lithosphere?
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?
What are the characteristics of the mantle?
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The thickest section of the Earth. Approximately 2900km.

It is made up of semi-molten rock called magma.

What are the characteristics of the mantle?
Describe the physical processes that happen at a conservative plate margin.
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At a conservative margin, two plates move parallel to each other. They can be moving in the same or opposite directions. Pressure builds along the margin of tectonic plates. As friction is overcome the rock fractures releasing energy as an earthquake.
Describe the physical processes that happen at a conservative 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.




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