Geography AQA GCSE PAPER 1

Natural Hazard - A natural hazard is a natural process which could cause death, injury or disruption to humans, or destroy proprty or posesions. Natural disaster - A natural hzard that has actualy happened Geological hazards - Caused by kand and tectonic processes Meteorological hazards - Caused by weather and climate Factors affecting hazard risk - Urbanisation, poverty, development, climate change Tectonic plates - Slabs of the Earth's crust Continental crust - thicker and less dense Oceanic crust - thinner and more dense Tectonic plate movement - caused by convection currents underneath the Earth's crust Destructive plate - Two plates moving towards one another, oceanic plate subducts under continental plate and friction causes melting of oceanic plate, triggers earthquake Constructive plates - Two plates move apart, magma forces way along gap and causes earthquake, erupted lava cools and forms volcano