How is energy conserved when a skater go down a ramp?

As a skater goes down a ramp, gravitational potential energy is converted into kinetic energy. At the top of the ramp, the skater has maximum potential energy due to their height. As they descend, this potential energy decreases while their kinetic energy increases, keeping the total mechanical energy of the system conserved (ignoring friction and air resistance). Thus, energy is conserved throughout the motion, transforming from one form to another.