Plate Margins Flashcards
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 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?
Do volcanoes and earthquakes occur at all plate margins?
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Volcanoes and earthquakes occur at all plate boundaries except at a conservative margin where only earthquakes happen.
Do volcanoes and earthquakes occur at all plate margins?
Give one reason why the incidence of natural hazards is increasing.
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Reasons include:
- Climate change
- Deforestation
- Urbanisation
- Population increase
Give one reason why the incidence of natural hazards is increasing.
Identify the three types of plate margin.
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Constructive, conservative and destructive.
Identify the three types of plate margin.
