geography flashcards
Define a natural hazard
A natural event which poses risk of death, injury or damage to people and property
Define a destructive plate boundary
A plate boundary which an oceanic plate and a continental plate collides, the oceanic plate subducts
Tectonic hazards of a destructive plate boundary
Earthquakes and volcano eruptions
Define a conservative plate boundary
A plate boundary which two continental plate boundaries slide past each other, creating vibrations
Tectonic hazards of a conservative plate boundary
Earthquakes
Define a constructive plate boundary
A plate boundary where two plates move away from each other, creating a ridge where magma cools, which creates a shield volcano
Tectonic hazards of a constructive plate boundary
Volcano eruptions
What factors affect tectonic risks?
Urbanisation, poverty, farming, climate change
What are the methods of reducing the effects of a tectonic hazard?
Monitoring/Prediction, Protection, Planning
What are the methods of Monitoring/Prediction?
Seismometers, monitoring the water table, satelitte monitoring ground deformation
What are the methods of protection?
Designing earthquake-resistant buildings, increasing awareness
What are the methods of planning?
Earthquake drills, seismic maps, preparing emergency supplies
What are primary effects?
Primary effects are events which occur directly because of the natural hazard
What are secondary effects?
Secondary effects are events which are caused by primary effects
2010 Chile earthquake deaths
550 combined deaths
