:High rise terminal:

The frequent use of a high rise nuclear tone, especially on non-questions. This style of speech is also called Uptalk or Upspeak, and has been noted to be on the increase in many accents of English in recent years, especially amongst younger speakers.. There is no real consensus on the motivation for this intonational innovation. Some suggest that it is a continual check that interlocutors have understood the message, hence another alternative name: checking tone.