Plate Margins Flashcards
Give an example of two tectonic plates that form a destructive plate margin
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Pacific and the Eurasian plate, Nazca and South American plate, Philippines and Eurasian plate and the Indo-Australian and Pacific plate.
Give an example of two tectonic plates that form a destructive plate margin
What is a natural hazard?
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A natural hazard is a natural event such as an earthquake, volcanic eruption, tropical storm or flood that has the potential to cause death and damage.
What is a natural hazard?
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 factors affect hazard risk?
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Factors include:
- An increase in the number of people vulnerable to the natural hazard (e.g. population growth & increased population density close to hazard-prone areas)
- An increase in the frequency and magnitude of the natural hazard
- A decrease in the number of people capable of coping with the natural hazard
What factors affect hazard risk?
Give two possible reasons why tectonic plates move.
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Convection currents & Slab pull (+ ridge push).
Give two possible reasons why tectonic plates move.
