Hazards and Structure of the Earth Flashcards
What is the lithosphere?
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The rigid layer formed by the crust and upper mantle.
What is the lithosphere?
Explain ridge push and slab pull as a cause of plate movement.
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Ridge push –magma rises as the plates move apart. The magma cools to form new plate material. As it cools It becomes denser and slides down away from the ridge. This causes other plates to move away from each other.
Slab pull – The denser plate sinks back into the mantle under the influence of gravity. It pulls the rest of the plate along behind it.
Slab pull – The denser plate sinks back into the mantle under the influence of gravity. It pulls the rest of the plate along behind it.
Explain ridge push and slab pull as a cause of plate movement.
Give an example of a location where volcanoes occur at a volcanic hot spot.
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Hawaii, Yellowstone and The Deccan Traps.
Give an example of a location where volcanoes occur at a volcanic hot spot.
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?
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?
