* Potential Energy: The water in a river has gravitational potential energy because of its position relative to the Earth. The higher the river is, the more potential energy it has. As the water flows downhill, this potential energy is converted into kinetic energy.
* Kinetic Energy: The flowing water in a river has kinetic energy because it is in motion. The faster the water flows, the more kinetic energy it has.
In summary: A river possesses both potential and kinetic energy, and the transformation between these two forms is what drives the river's movement.
