Focus
Focus
The point on the Earth's surface directly above where an earthquake begins is known as the epicenter. It is the point on the surface vertically above the focus or hypocenter of the earthquake, where the seismic waves originate. Seismologists use the epicenter to locate and map earthquake events.
earthquakes and volcanoes change the worl by pollution for example car pollution, Factorys etc...
If the fault is responsible for the earthquake, there will be movement (displacement) along the fault.
Shake it
earthquakes are movements on the earths surface
the moving of the tectonic plates which makes the earths surface unstable which then causes earthquakes and volcanic eruptions
a earthquake can really start anywhere but it is usually started at the earths core (middle). Other names are the epicenter which is were the earthquakes starts at the earths surface. The focus is where it begins inside the earth.....
an earthquake
An earthquake is started when two plates (which lie under the Earths surface) rub together this creates movement which then sometimes pulls/pushes at the earths surface and creates giant cracks in the earths surface... and that is how an earthquake is started.
This is known as the epicentre.
Anywhere where the earths plates meet. Earthquakes occur only were there is an epicenter. Were ever the epicenter is the earthquake will happen.