EarthquakesEarthquakes

Location of worldwide earthquakes

What are Earthquakes?• The shaking or trembling caused by the sudden

release of energy• Usually associated with faulting or breaking of rocks• Continuing adjustment of position results in

aftershocks

Earthquakes

• Plates moving in any direction causes earthquakes

• The worst are caused by plates rubbing past each other as in C

• This happens along the Californian coast

EarthquakesEarthquakes

EarthquakesEarthquakes

EarthquakesEarthquakes

EarthquakesEarthquakes

Earthquakes

seismic waves

epicentre

hypocentre (focus)

Earthquakes are caused by a sudden release of energy from the Earth’s crust.

Effects of earthquakes

Chile (1960)

9.6Richter Scale

hypocentre (focus)

epicentre

landslides

damage to buildingstsunami

seismic waves