Tectonic Hazards Flashcards
1
Q
Where do volcanic occur?
A
- Along ocean ridges where plates move apart (e.g. Mid Atlantic Ridge)
- Associated with continental rift (e.g. Mount Kenya)
- Along subduction zones (e.g. Pacific Ring of Fire)
- Over hotspots (e.g. Hawaii)
2
Q
Where do earthquakes occur?
A
- Along plate boundaries, most powerful on convergent
- Some away from boundaries, associated with reactivation of old faults (e.g. Malvern Lineament)
3
Q
Outline Dregg’s model of a natural disaster
A
- Hazardous natural event such as earthquake or hurricane
- Vulnerable population
- Where these two cross = Disaster
4
Q
When do hazards become disasters?
A
- 10+ killed
- 100+ affected
- State of emergency declared
- International assistance called for
