What is the function of tidal range systems?

• A. To generate power using the difference in water height between high tide and low tide.
• B. To desalinate seawater using osmosis
• C. To store energy in pumped storage
• D. To power cities using constant river flow

Answer: (A)

Tidal range systems generate electricity by using the height difference of the sea between high tide and low tide. As the tide rises or falls, water moves through turbines, turning the potential energy of raised water into electrical energy. This relies on the predictable change in water level, not on desalination processes, energy storage in pumped-storage setups, or constant river flow. So the function is to convert the energy from the tides’ water-height difference into power.