What are types of clouds called?

In order of what? alphabetical? size? height in the atmosphere? concentration of water (precipitation potential)? danger risk? frequency of occurrence? Google images has quite a few well explained illustrations if you simply search for "cloud types" Wikipedia's got a great article on it, albeit so exhaustive it's intimidating: http://en.wikipedia.org/wiki/List_of_cloud_types in fact I'd recommend the Simple English Wikipedia page found here instead: http://simple.wikipedia.org/wiki/Cloud NOAA's a good resource too: http://www.crh.noaa.gov/lmk/?n=cloud_classification I know very little about gold but Wikipedia's probably a good place to start, that and posting questions in the appropriate category will probably help you get more relevant answers. Enjoy your homework.