Conservative plate margin - Tectonic plate margin where two tectonic plates slide past each other, Constructive plate margin - Tectonic plate margin where plates pull apart and magma rises to fill the gap, Destructive plate margin - Tectonic margin where plates move towards each other. The oceanic plate will subduct beneath the continental, Earthquake - A sudden or violent movement within the earth's crust, Immediate responses - The reaction of people as the disaster happens and in the immediate aftermath, Long-term responses - Later reactions that occur in the weeks, months and years after the event, Monitoring - Recording physical changes, such as earthquake tremors around a volcano, to help forecast when and where a natural hazard may occur, Plate margin - The margin or boundary between two tectonic plates, Planning - Actions taken to respond to, and recover from, natural disasters, through measures such as emergency evacuation,  Prediction - Attempts to forecast when and where a natural hazard might strike based on current knowledge. This can not yet be done for earthquakes., Primary effects - The initial impact of a natural event on people and property, caused directly by it, e.g. buildings shaking in an earthquake, Protection - Actions taken before a hazard strikes to reduce its impact, such as educating people or improving building design., Secondary effects - The after effects that occur as indirect impacts of a natural event, sometimes on a longer timescale, for instance fires due to ruptured gas mains or a tsunami , Tectonic hazard - A natural hazard caused by movement of tectonic plates (volcanoes and earthquakes) ,  Tectonic plate - segment of the Earth’s crust which can ‘float’ across the heavier, semimolten rock below, Volcano - An opening in the Earth’s crust from which lava, ash and gases erupt,

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