Earthquakes Flashcards
Why do you find earthquakes at the edge of plate boundaries
Because when friction occurs at plate margins, the movement then causes earthquakes to form
Focus
The point at which the earthquake happens below the ground surface
Epicentre
The point directly above the focus
Planning for an earthquake
- Emergency kit/ supplies (water,food,torch,radio)
- Tv and radio stations - broadcasting warning signs
- Evacuation centres - can hold 2,000 if people need to evacuate
- Cross bracing protect people and building
Predicting earthquakes
Seismometer - moniters earths tremors to know when to expect an earthquake
What is a Richter scale
Using scientific evidence (grounds movement)
What is a Mercalli scale
Based on impacts around the earthquake - could differentiate the effect on LEDCS and MECS
Describe the distribution of earthquakes
Earthquakes are commonly found in on the edge of plate boundaries (pacific ring of fire)