The challenge of natural hazards- Key Words Pt.1 Flashcards
Conservative plate margin
Two plates sliding alongside each other, in the same or opposite directions.
Constructive plate margin
Plates that are moving apart.
Destructive plate margin
Two plates are converging and the oceanic plate is subducted.
Earthquake
A sudden violent movement within the Earth’s crust followed by a series of shocks.
Economic impact
Effect of an event on the wealth of an area or community.
Environmental impact
Effect of an event on the landscape and ecology of the area.
Hazard risk
Probability or chance that a natural hazard may take place.
Immediate responses
Reaction of people as the disaster happens in the immediate aftermath.
Infrastructure
The basic equipment and structures that are needed for a country or region to function e.g. roads, utilities, water and sewage.
Long-term responses
Later reactions that occur in the weeks.
Monitoring
Recording physical changes to help forecast and predict when a natural hazard might strike.
Planning
Actions taken to enable communities to respond to, and recover from, natural disasters.
Plate margin
The border between two tectonic plates.
Prediction
Attempts to forecast when and where a natural hazard will strike, based on current knowledge. This can be done to some extent for volcanic eruptions and tropical storms, but less reliably for earthquakes.
Primary effects
Initial impacts of a natural event on people and property, caused directly by it.
