We can't do your homework for you, that isn't what advicenators is for, but there's a lot of information on that website. The name meaning is basically grams, meters, liters, etc. The symbol is L, G, M, etc. Basically its what the units/symbols stand for.
Attention: NOTHING on this site may be reproduced in any fashion whatsoever without explicit consent (in writing) of the owner of said material, unless otherwise stated on the page where the content originated. Search engines are free to index and cache our content. Users who post their account names or personal information in their questions have no expectation of privacy beyond that point for anything they disclose. Questions are otherwise considered anonymous to the general public.