Here's why:

* Sliding Boundaries: These boundaries are where two tectonic plates slide past each other horizontally.

* No Subduction: Unlike convergent boundaries where one plate dives beneath the other (subduction), there's no collision or sinking of the crust at a sliding boundary.

* Friction and Earthquakes: The primary activity at sliding boundaries is the build-up of friction and the release of energy through earthquakes.

Examples of Sliding Boundaries:

* The San Andreas Fault in California: The Pacific Plate is sliding past the North American Plate.

* The Alpine Fault in New Zealand: The Pacific Plate is sliding past the Australian Plate.

Let me know if you have any other questions!