Moon Tides
- Explains with graphs and pictures how the moon affects oceans. Includes the differences between lunar, spring, neap, high, and low tides.
- http://home.hiwaay.net/~krcool/Astro/moon/moontides/

Enchanted Learning: Tides
- Brief description and illustrations about what causes the tide to rise and fall.
- http://www.enchantedlearning.com/subjects/ocean/Tides.shtml

Why Tides?
- Animation showing the gravitational action of the sun and moon on the earth's oceans.
- http://www.sfgate.com/getoutside/1996/jun/tides.html

What are Tides?
- Brief definition concerning the rise and fall of the tides.
- http://www.ndbc.noaa.gov/educate/tides.shtml

Tide and Gravity Labs
- Learn about basic concepts of gravitational force, and how it relates to tides on the Earth.
- http://sunshine.chpc.utah.edu/labs/tides/tides_main.html

NOVA: Sinking City of Venice
- Program about the threat that Venice is under from rising tides.
- http://www.pbs.org/wgbh/nova/venice/

How Does the Moon Affect Tides?
- Boatsafe Kids answer concerns to water safety during low and high tides.
- http://www.boatsafe.com/kids/tides.htm