1. The problem statement, all variables and given/known data Describe the energy changes that occur in the system shown below (The picture shows a water reservoir at the top of the diagram and then some pipes that leads to a hose and you can see the water coming out of the hose in an arc and hitting the ground.) as the water travels from the reservoir until it hits the ground. 2. Relevant equations The options are: Gravitational Potential, Strain Potential, Kinetic Energy, thermal energy and sound. Each option can be used once, more than once, or not at all. 3. The attempt at a solution So my chain goes like this: Gravitational Potential of water in the reservoir --> Strain Potential of water in the pipes --> Kinetic Energy as water flows due to the hose being turned on --> Gravitational Potential as the water it shot upwards --> Kinetic energy as it falls back to the ground --> sound as it hits the ground ? Bit of a weird question but theres no mark scheme for it so I can't check my answer.