Tide — Science definition
The regular rise and fall of ocean water levels, caused mainly by the Moon's gravity, with a smaller contribution from the Sun.
Where it is taught
- Gravity, Orbits & Tides — Earth, Moon & Solar System, Earth & Space Science, Grade 9
In use
A simple two-bulge diagram is useful for introductory geometry but does not predict every coastal tide time.
Gravity, Orbits & Tides