Which energy source derives directly from the gravitational effects of the Moon?

The correct answer, lunar tidal energy, is derived directly from the gravitational pull of the Moon on the Earth's oceans. This gravitational influence creates tides in the Earth's waters, and the movement of these tides can be harnessed for energy. Tidal energy systems typically harness the potential and kinetic energy created by the rise and fall of tidal waters.

This energy source is distinct because it relies specifically on the lunar gravitational forces, making it unique compared to other forms of energy. For instance, wind energy is generated by the movement of air resulting from atmospheric conditions, solar energy harnesses sunlight through photovoltaic cells, and hydro energy is usually associated with the flow of rivers or dams but is not directly tied to lunar influence. Consequently, lunar tidal energy stands out as a direct result of the gravitational relationship between the Earth and the Moon.