The American Museum of Natural History has a rich Web site: http://www.amnh.org/ology
This is a student friendly site. It actually has collectable trading cards for people to collect. Lots of information about different types of “Ology”. In fact I learned that some sea horses are endangered and some fishermen have set up sea horse sanctuaries. http://illegal-fishing.info/item_single.php?item=news&item_id=2333&approach_id=13
Kids National Geographic is also a very appealing web site: http://kids.nationalgeographic.com/ Lots of catchy audio and great information.
http://kids.yahoo.com/ Yahoo Kids has a World Factbook on it’s kid site.
KidSites.com has a collection of kid friendly science sites. Happy exploring. http://www.kidsites.com/sites-edu/science.htm