* Kinetic energy is the energy of motion. Water falling over a cliff is clearly in motion.
* The faster the water falls, the more kinetic energy it has. The speed of the falling water determines the amount of kinetic energy.
* The greater the volume of water, the more kinetic energy it has. More water means more mass in motion, leading to more kinetic energy.
In short, a waterfall is a spectacular example of kinetic energy in action! The falling water can be harnessed to generate electricity (hydroelectric power) precisely because of its kinetic energy.