Plate tectonics is the theory that Earth's outer shell is divided into several plates that glide over the mantle.
The movement of tectonic plates can cause earthquakes and volcanic eruptions.
The San Andreas Fault is a well-known tectonic boundary between the Pacific Plate and the North American Plate.
The region experiences frequent tectonic activity due to its location near a plate boundary.
Tectonic forces shape the Earth's surface through processes like folding and faulting.