GCSE Bitesize Revision Site – Plate Tectonics Sectionhttp://www.bbc.co.uk/schools/gcsebitesize/geography/platetectonics/
Animations of different types of plate boundaries:
The Disaster Management Cycle:
Case Study of the Kobe Earthquake:
Case Study of Loma Prieta Earthquake:
BBC On this day:
Case Study of Montserrat Volcanic Eruption:
Animated Guide to Earthquakes
Animated Guide to Volcanoes
Asthenosphere – the upper part of the earth’s matle, where the rocks are more fluid.
Collision plate boundary – a tectonic margin at which two continental plates come together.
Conservative plate boundary – where two tectonic plates slide past each other.
Constructive plate boundary – tectonic plate margin where rising magma adds new material to the diverging plates.
Continental crust – the part of the crust dominated by less dense granitic rocks.
Convection currents - circulating movements of magma in the mantle caused by heat from the core.
Core – the central part of the earth, consisting of a solid inner core and a more fluid outer core, mostly composed of iron and nickel.
Destructive plate boundary – tectonic plate margins where oceanic plate is subducted.
Evacuation – the removal of people from an area, generally in an attempt to avoid a threatened disaster (or escape an actual one)
Long term planning – planning that looks beyond immediate costs and benefits by exploring impacts in the future.
Magnitude – the size of something.
Oceanic crust – the part of the crust dominated by denser basaltic rocks.
Plate margins – the boundary between two tectonic plates.
Prediction – the forecasting of future change.
Preparation – the process of getting ready for an event.
Response – the way in which people react to a situation.
Short term emergency relief – help and aid provide to an area to prevent immediate loss of life because of shortage in basics, such as food, water and shelter.
Tectonic hazards - threats posed by earthquakes, volcanoes and other events triggered by coastal processes.
At the end of this unit you should...
- Know the difference between oceanic and continental plates, and how and why they move.
- Know the different layers of the Earth’s interior and how they differ.
- Know why the asthenosphere is an important part of the mantle.
- Know how convection in the mantle drives plate tectonic motion.
- Know that there are different types of plate margins.
- Know how new oceanic crust forms at constructive plate margins.
- Know how oceanic crust is subducted at destructive plate margins.
- Know why earthquakes occur along conservative plate margins.
- Know why fold mountains form in collision zones.
- Know how destructive collision margin earthquakes can be.
- Be able to explain the global pattern of earthquakes and volcanoes.
- Know how shield and composite volcanoes form from different types of magma.
- Know the difference between the VEI, Richter and Mercalli scales of measuring hazards.
- Know the difference between primary and secondary impacts.
- Know how earthquakes and volcanoes can be planned for and even predicted.
- Know the different types of hazard response, both short and long term.
- Detailed causes and impacts for a LEDC MEDC earthquake.
- Detailed causes and impacts for a LEDC and MEDC volcanic eruptions.