All Natural Hazards Flashcards

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What is the area where two plates meet known as?
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A plate margin or boundary.
What is the area where two plates meet known as?
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.
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.
Give an example of two tectonic plates that form a constructive plate margin
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North American and Eurasian Plate, South American plate and African Plate, Pacific plate and Nazca plate and the Cocos plate and Pacific plate. 
Give an example of two tectonic plates that form a constructive plate margin




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