This site explains what tides are and the difference between Proxigean Spring Tides, spring tides, and neap tides, and how these are formed. Graphic illustrations are provided.

This FYI for Kids (Volume 5, Issue 3) focuses on the tides. It explains the pull on the earth by the sun and moon and how the tides go in and out.

A very general introduction to tides and their cycles, with one link to a graph of tide data.

For middle grades. Using your knowledge of tides, answer the following questions.

Take this 15 question multiple choice quiz on tides, eclipses and seasons.

Click on tide pools on the left hand menu to find a description of tidepools. Use the menu to navigate to other shoreline related topics.

An excellent and thorough answer to the often asked question about high tide "bulges" on the side of Earth facing away from the Moon or Sun.

Did you know the rising and falling of the sea level is caused by the gravity of the Moon and the Sun? Kids learn about ocean tides including tidal currents and types of tides on this site.

In this problem, 8th graders are presented with a graph showing high and low tides and are asked to analyze it. Aligns with 8.F.B.5.

An excerpt from Leonardo da Vinci's Codex Leicester. Find out how this "Renaissance man" observed the Earth and learned more about tides, moons, and fossils in the mountains.

This illustrated essay from the NOVA Web site answers questions about irregularities in the tides.

This interactive resource adapted from the National Park Service describes the many forces that affect shorelines, including tides, weathering, erosion, and deposition. Includes background reading handout and discussion questions.

In this interactive learning module, students discover the effects of the changing tides on the life and health of an estuary ecosystem.

In this science-themed literacy lesson, students analyze the structure of relationships among concepts in a text and how those relationships help to develop the meaning of a text.

Renewable energy is the energy that is extracted from natural sources, such the Sun (solar), earth (geothermal), wind, and water (hydropower). These sources are renewable because they can be replenished by the same natural sources within...

Washington State's Dept of Ecology website provides a brief description of a tide pool, it's inhabitants and tips on examining them. Related links.

Read the full text of the short story "The Tide-Marsh" by Kathleen Thompson Norris.

Read the full text of "The Tide" by Stewart Edward White on this site.

Read the short story "Caught on the Ebb-Tide" by Edward Payson Roe.

Even great scientists make mistakes! This illustrated essay from the NOVA Web site looks at Galileo's theory of the tides, which, while well thought out, was wrong.

Understand where tides come from. This brief article illustrates and describes the science behind high and low tides as well as why some places experience only one high and low in a twenty-four hour period.

What's it like on Jupiter's moon, Io? Find out in this short, illustrated tutorial.

Find out why the oceans are blue and what causes waves by clicking here. There is a table of information about the four oceans as well as interesting facts on waves, salinity, and tides.

[Free Registration/Login Required] This flipchart provides a comprehensive study of the tides with the use of pictures, graphs, tables, Internet web sites, animations, and student interaction with the ACTIVboard, a glossary of tide...