When two tectonic plates meet, it is called a ‘plate boundary’. There are three main types of plate boundaries: divergent, convergent, and transform. Each type of boundary describes the movement and interaction of the tectonic plates.
Divergent boundaries occur where two plates are moving away from each other, often resulting in new crust being formed, like at mid-ocean ridges. Convergent boundaries happen when two plates collide, which can cause one plate to be forced beneath another, a process known as subduction, often leading to the creation of mountains or volcanic activity. Lastly, transform boundaries are where plates slide past each other horizontally, which can lead to earthquakes.