- 4. The probability or chance that a natural hazard may take place.
- 5. The initial impact of a natural event on people and property, caused directly by it, for instance, the ground buildings collapsing following an earthquake.
- 1. A natural hazard caused by the movement of tectonic plates (including volcanoes and earthquakes).
- 2. 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 resulting from the ground shaking.
- 3. A natural event (for example an earthquake, volcanic eruption, tropical storm, flood) that threatens people or has the potential to cause damage, destruction and death.