Natural Hazards Flashcards
Natural hazard
Natural process which could cause death, injury or disruption to humans.
Destroy property and possessions.
Social impact
The effect of an event on the lives of people or community
Hazard risk
Probability or chance that a natural hazard may take place.
Earthquake
A sudden or violent movement within the earth’s crust followed by a series of shocks.
Plate margins
The border between two tectonic plates.
Volcano
An opening in the earth’s crust from which lava,ash and gases erupt.
Hot spots
Places within the mantle where rocks melt. To regenerate magma
Constructive (transform)
Tectonic plate Martian where rising magma adds new material to plates that are diverging or moving apart.
Destructive
Tectonic plate margin where two plates are converging and oceanic plate is subducted- there could be violent earthquakes and explosive volcanoes.
Conservative
Managing the environment in order to preserve ,protect or restore it.
Primary effects
Initial impacts of a natural event on people and property, caused directly by it, i.e. The buildings collapsing following an earthquake.
Secondary effects
After effects that occur as indirect impacts of a natural event, sometimes on a longer timescale, i.e. Fires due to ruptured gas ,mains ,resulting from the ground shaking
Immediate responses
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
Geothermal energy
Energy generated by heat stored deep in the earth
