Why do earthquakes happen in places that are along the fault lines?
Fault lines are the boundaries of tectonic plates that make up the earth’s crust. Earthquakes often occur at these boundaries because the movement of these plates causes seismic activity as the plates interact with each other. Plates may push together, pull apart, or slide against each other, or one plate may be pushed under another. Volcanic activity often takes place at the boundaries of these plates, which can cause earthquakes as well.
