Water

http://www.enchantedlearning.com/subjects/astronomy/planets/earth/Watercycle.shtml

Animated cycle and info (right side):
http://www.epa.gov/safewater/kids/flash/flash_watercycle.html

http://www.bbc.co.uk/schools/riversandcoasts/water_cycle/rivers/pg_02_flash.shtml

http://observe.arc.nasa.gov/nasa/earth/hydrocycle/hydro1.html

Books to read online or listen to:
http://www.kimballmedia.com/Drippy/DrippysWorldTrialStories/ToMountainsAndBack/Entry.htm

Research:
http://www.on.ec.gc.ca/community/classroom/c5-intro-e.html

Water facts: