Tectonic Hazards
- Created by: izz08
- Created on: 24-11-17 12:01
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- Natural hazards
- Tectonic Hazards
- Plate tectonics theory
- The center of the earth is the core - and inner and an outer core
- The crust is divided into lots of slabs called tectonic plates
- Plates are made out of two types of crust - Continental and oceanic
- The inner core is a ball of solid iron and nickel
- The outer core is liquid
- The plates are moving because the rock in the mantle underneath them is moving
- The places where plates meet are called boundaries or plate margins
- Earthquakes plate margin
- Destructive margins - pressure builds up when one plate gets stuck as it is moving down past the other plate into the mantle
- Constructive margins - pressure builds along cracks within the plates as they move away from eah other
- Conservative margins - pressure builds up when plates that are grinding past each other get stuck
- The plates jerk past each other, sending vibrations. The vibrations spread out, from the epicentre
- Volcanoes plate margins
- At destructive plate margins the oceanic plate goes under the continental plate because it s more dense
- At constructive margins the magma rises up into the gap created by plates moving apart, to form a volcanoe
- Some volcanoes also form over parts of the mantle that are really hot
- Living close to tectonic hazards
- Soil around volcanoes is fertile, suitable for growing crops
- Volcanoes are tourist attractions, working in tourist industry
- Geothermal energy, generate electricity, power stations
- Always lived there - means moving from family and friends
- Government support, rebuild their homes
- Reducing impact of earhtquakes
- Prediction - Cracks appearing in rock, strange behavior in animals
- Buildings - Reinforced concrete, special foundations
- Planning - Avoid areas at risk, train emergency services
- Education - How to evacuate, survival kits
- Aid - Governments sending aid to LICs
- LICs
- Poor quality housing
- Infrastructure, poorer
- Not enough money for resources
- Healthcare is worse, not enough supplies
- Plate tectonics theory
- A natural hazard is a naturally occuring event that has the potential to affect peoples lives or property eg. earthquake
- Earthquakes and volcanoes are tectonic hazards
- When natural hazards do affect people or their property is it called natural disaster
- Tectonic Hazards
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