Plate Boundaries

Plate boundaries are the areas where tectonic plates meet. There are three main types of plate boundaries: divergent boundaries, convergent boundaries, and transform boundaries.

Divergent Boundaries

Divergent boundaries occur where tectonic plates move away from each other. This movement can result in the formation of new crust as magma rises from the mantle to fill the gap created by the separating plates. Divergent boundaries are commonly found along mid-ocean ridges.

Convergent Boundaries

Convergent boundaries occur where tectonic plates move towards each other. When this happens, one plate is forced beneath the other in a process known as subduction. Convergent boundaries can lead to the formation of mountain ranges, volcanic arcs, and deep ocean trenches.

Transform Boundaries

Transform boundaries occur where tectonic plates slide past each other horizontally. The movement at transform boundaries is typically characterized by earthquakes as the plates grind against each other. One well-known example of a transform boundary is the San Andreas Fault in California.

Study Guide

1. What are the three main types of plate boundaries?
2. Describe the movement of tectonic plates at divergent boundaries.
3. What geological features are associated with convergent boundaries?
4. Where can transform boundaries be found?
5. Explain the impact of plate boundaries on earthquake activity.

Understanding plate boundaries is crucial for comprehending the processes that shape the Earth's surface and lead to natural phenomena such as earthquakes and volcanic eruptions.