Here's a breakdown:
* Plate Boundaries: The Earth's outer layer (lithosphere) is made up of large plates that constantly move. These plates interact at their boundaries, causing earthquakes, volcanic activity, and mountain formation. The most common types of boundaries are:
* Convergent Boundaries: Where plates collide, one plate often subducts (slides) beneath the other. This generates immense pressure and friction, leading to earthquakes and volcanic eruptions.
* Divergent Boundaries: Where plates move apart, magma rises from the mantle, creating new crust and triggering earthquakes along the spreading ridges.
* Transform Boundaries: Where plates slide past each other horizontally, causing friction and earthquakes.
* Intraplate Earthquakes: Although most earthquakes occur at plate boundaries, some can happen within the plates themselves. These are called intraplate earthquakes and are less frequent but can still be significant.
Therefore, while earthquakes can occur in a variety of locations, they are overwhelmingly concentrated in specific regions around the globe that are associated with plate boundaries.