I am to deliver an informative speech about earthquakes in class. However, I was not the first to talk about earthquakes and his discussion of the cause of earthquakes is different from mine.
He mentions that there are multiple causes of earthquakes like a volcanic eruption, release of seismic waves, and tectonic plate movement.
However, from the information I gathered from the United States Geological Survey, it states that the cause is the movement of tectonic plates. The roughness of the plate boundaries cause them to get stuck; thereafter, when the plates move far enough, the boundaries unstick, releasing seismic waves, causing an earthquake.
Is the movement of tectonic plates one of the causes or the volcanic eruptions, etc. are the cause of the sudden slip or the part when the boundaries unstick which cause the earthquake?