Here's why:

* Transform boundaries are where two tectonic plates slide past each other horizontally.

* There's no creation or destruction of crust at these boundaries.

* Instead, the plates grind against each other, causing earthquakes.

Examples of transform boundaries:

* The San Andreas Fault in California

* The Alpine Fault in New Zealand

Other types of boundaries:

* Convergent boundaries: Plates collide, resulting in the destruction of one plate (subduction).

* Divergent boundaries: Plates move apart, creating new crust.