Intonation (definition)
From Scottish Gaelic Grammar Wiki
A change of pitch in a language that may give some indication of syntactic information. For example in English- a rising intonation at the end of a phrase indicates a question. This is not to be confused with tone, which in some languages can indicate a completely different word and meaning.
External Links
http://en.wikipedia.org/wiki/Intonation_(linguistics)
http://www.umanitoba.ca/faculties/arts/linguistics/russell/138/sec3/inton.htm