Geography AQA PAPER 1
Natural Hazard
Natural Hazard is any natural process that is a potential threat to human life and property.
Factors affecting hazard risk –
• Urbanisation
• Poverty
• Development
• Climat
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Geography AQA PAPER 1
Natural Hazard
Natural Hazard is any natural process that is a potential threat to human life and property.
Factors affecting hazard risk –
• Urbanisation
• Poverty
• Development
• Climate change
Constructive plates - Two plates move apart, magma forces way along gap and causes earthquake, erupted lava cools and forms volcano.
Ecotourism - The practice of using an area's natural environment to attract tourists which is sustainable and won't damage area.
Destructive plate - Two plates moving towards one another, oceanic plate subducts under continental plate and friction causes melting of oceanic plate, triggers earthquake
Conservative plate - Two plates moving alongside, friction can send shockwaves causing earthquakes
Where are volcanoes distributed? - Coastline and tectonic plate boundaries
Where are earthquakes distributed? - Coastline and tectonic plate boundaries
Chile HIC earthquake - 27th feb 2010, 8.8 Richter scale, caused on destructive plate margin
PE- 5000 deaths, Santiago airport damaged
SE- 1500km road damaged by landslide
IR- Emergency service floating bridge, field hospitals
LTR- President said 4 years to recover
Nepal LIC earthquake - 25th April 2015, 7.9 Richter scale, caused by collision of eurasian and Australian plate
PE- 3 mil homeless
SE- Avalanche 250 missing
IR- Social media search, field hospitals
LTR- Homeless rehoused, tourist site reopened
Why would people live next to natural hazards? - Rarity of volcano explosion, poverty, fertile flood plain soils
How to reduce risk from tectonic hazard – Monitoring- using scientific equipment to detect warning
Prediction- historical events
Protection- designing buildings
Planning- identifying and avoiding places at risk
Coriolis effect - The effect of Earth's rotation on the direction of winds and currents
Formation of a storm - 26 degrees water, close to equator, warm ocean heats air causing it to rise, water evaporates from hot surface, so rising air contains water vapour, air starts to spin, eye is calm.
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