Final answer:
The claim that tidal bores are only a few centimeters in height is false. They can vary greatly in size, with some locations experiencing large tidal ranges, particularly where geographical features enable it.
Step-by-step explanation:
The statement that tidal bores are typically only a few centimeters in height is false. Tidal bores can vary greatly in size depending on various factors such as the topography of the shoreline and the bathymetry of the ocean floor. In some locations, such as the Bay of Fundy in Canada, tidal ranges can be as much as 16.3 meters due to the unique geographical features that facilitate large amplitude tides.
Tidal energy extraction is indeed dependent on locations that exhibit large tidal amplitudes, which are essential for the generation of significant amounts of power. However, because of the factors that influence tidal forces, including those from astronomical bodies like the Moon and even black holes, the heights of tides and tidal bores can be substantially larger than a few centimeters in regions that are predisposed to such phenomena.