Waterfalls
Waterfalls often form as a stream flows over different bands of rock, with the soft rock eroding more quickly to undercut the hard rock. Unsupported, the overhanging rock eventually collapses. This fallen rock crashes down into a pool of water where the water’s swirling action results in more erosion. Over time, this process is repeated, resulting in a series of stair-step waterfalls retreating up a hillside. Nature creates an array of different types of vertical water runoffs. Experts have different ideas about what constitutes a waterfall. Although there are no definitive criteria, two methods have been developed to categorize waterfalls. Geometrical Classification categorizes waterfalls based on shapes and physical features. This method is helpful to identify falls for their visual …
