Hazards and Structure of the Earth 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?
Where in the world are the majority of the Earth’s volcanoes and earthquakes found?
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The majority of the Earth’s volcanoes and earthquakes occur around the Pacific Ring of Fire.
Where in the world are the majority of the Earth’s volcanoes and earthquakes found?
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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