NOAA
Noaa: National Ocean Service: Education: Tides and Water Levels
A great resource for explaining and understanding tides. Find out what tides are and why it is so important to monitor them. This is an extensive tutorial followed by a set of review questions. All of the information can be downloaded as...
Other
Physical geography.net: Introduction to the Hydrosphere: Ocean Tides
This is the last (18th) section of a textbook chapter on the hydrosphere. It explains what causes tides and tidal variations, describes some different types of tides, and shows on a world map where these tides occur. Includes link to a...
Other
Moon Tides: How the Moon Affects Ocean Tides
Discusses the different kinds of tides, high and low tides, lunar tide facts, questions people have asked about tides, and causes of tides.
CK-12 Foundation
Ck 12: Earth Science: Tides
[Free Registration/Login may be required to access all resource tools.] Reveals tidal patterns and that tides are caused by the gravitational attraction of the Sun and Moon to Earth.