Hazards and Structure of the Earth Flashcards
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
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 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?
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 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?
