Earthquakes Flashcards
What is an earthquake
An earthquake is a sudden shaking and movement from the earth. They are caused from a transform plate boundary when a plate slips along a crack called a fault line the pressure releases and causes the earthquake eg. The San Andreas fault line
What is the focus
The focus is the point inside the earths crust where the earthquake starts
What is a shockwave/tremor
A shock wave or tremors travel out from the focus
What is the epicentre
The place on the earths surface directly above the focus is called the epicentre, it is where most damage happens
Where do earthquakes occur
Where plates collide and where plates slide past eachother
What locations do earthquakes usually happen
- Hotspots
- Pacific ring of fire Japan, California
- Himalayas Nepal, china
- The Mediterranean, turkey , Italy
What is the Richter scale
The Richter scale is a scale that measures the strength of an earthquakes it goes from 0 to 10
What does magnitude mean
The strength of the earthquake
Social impact of an earthquake
- Injury or death people can be killed or injured from falling, debris or collapsing objects
Economic impacts
Destruction of property building etc. the repairs to damage of buildings can be costly and take a lot of time to repair