Tidal range Tidal range Tidal range is the height difference between high tide and low tide. Tides are the rise and fall of sea levels caused by gravitational forces exerted by the Moon and Sun and the rotation of Earth. Tidal range is not constant but changes depending on the locations of the Moon and Sun. The most extreme tidal range occurs during spring tides, when the gravitational forces of both the Moon and Sun are aligned (syzygy), reinforcing each other in the same direction (new moon) or in opposite directions (full moon). During neap tides, when the Moon and Sun's gravitational
Sun and Moon (Middle-earth) the Narsilion, the "Song of the Sun and Moon". The published "Silmarillion" states that the Sun was created by the Vala Aulë; he and his people made a vessel to hold the radiance of the last fruit of Laurelin. The vessel of the sun was guided by Arien, a Maia. Names of the Sun amongst the Elves included Anar or "The Fire-golden", a name given to it by the Vanyar; Anor, the common name for the Sun in Sindarin, as seen in "Minas Anor" (later Minas Tirith) and the Gondorian province of "Anórien"; and Vása, or "Heart of Fire", a