Why So Many Earthquakes Recently? It's Physics
The earth has four major layers: the inner core, outer core, mantle and crust. The crust is what we need to think about here and the earth's crust is divided into 'plates' that are like puzzle pieces but are up to 50 miles thick and they are in constant motion in the earth's interior. These puzzle pieces are tectonic plates and the edges of the plates are called the plate boundaries. The plate boundaries are made up of many faults, and most of the earthquakes around the world occur on these faults. Most earthquakes are due to pressure that builds up over time and that pressure causes the ground to 'slip' along a geological fault plane on or near a plate boundary. The vibrations that occur when that slip happens create ground motion at the surface that vibrates read more