Question

The image shows a dam.

A large dam has point X behind it where the water level is high and point Y below it to, which the water flows.

Which descriptions best fit the labels?

X: kinetic energy
Y: potential energy
X: potential energy
Y: kinetic energy
X: mechanical energy
Y: electrical energy
X: electrical energy
Y: mechanical energy

Answer 1

X: potential energy
Y: kinetic energy

Reason: water held high behind the dam has gravitational potential energy; as it flows down that head the potential energy is converted into kinetic energy (and then can be turned by a turbine into mechanical and finally electrical energy).