Earthquakes occur all the time all over the world, both along plate edges and along faults. Most earthquakes occur along the edge of the oceanic and continental plates. The earth's crust (the outer layer of the planet) is made up of several pieces, called plates.
Earthquake occur everywhere, nearly everytime, but they are too weak for us to detect, without any device. Plates are always moving. But sometimes it is strong and we can detect it, most earthquakes occur at the edge of plates.
