All Natural Hazards Flashcards
Identify the three types of plate margin.
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Constructive, conservative and destructive.
Identify the three types of plate margin.
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
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
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.
What is a rift valley?
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A long, narrow valley lying between two normal geologic faults. Rift valleys usually form where the Earth’s lithosphere has become thin through extension associated with plate-tectonic processes.
What is a rift valley?
