Natural Hazards (OCR GCSE Geography A (Geographical Themes)): Flashcards
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What is a natural hazard?
What is a natural hazard?
Natural process causing death, injury, disruption or property loss
What is a natural disaster?
What is a natural disaster?
A natural hazard event that has actually happened
When does an event become a hazard?
When does an event become a hazard?
When it affects people
Cause of geological hazards
Cause of geological hazards
Land and tectonic processes
Examples of geological hazards
Examples of geological hazards
Volcanoes, earthquakes, landslides
Cause of meteorological hazards
Cause of meteorological hazards
Weather and climate
Examples of meteorological hazards
Examples of meteorological hazards
Tropical storms, flooding due to extreme weather
Vulnerability in natural hazards
Vulnerability in natural hazards
More people exposed = greater probability of being affected
Capacity to cope
Capacity to cope
Better coping with extreme events = lower threat
What is hazard risk?
What is hazard risk?
Probability that a natural hazard occurs
3 factors affecting hazard risk
3 factors affecting hazard risk
Type, frequency, magnitude
Predicted vs unpredicted hazards
Predicted vs unpredicted hazards
Tropical storms can be predicted, earthquakes cannot
Structure of Earth's core
Structure of Earth's core
Inner core solid, outer core liquid
What is the mantle?
What is the mantle?
Semi-molten rock moving slowly around the core
What causes tectonic plates to move?
What causes tectonic plates to move?
Convection currents in the mantle