Intonation (linguistics)
For example, northeastern American English, like very many languages (Hirst & DiCristo, eds. 1998), has a rising intonation for echo or declarative questions (He found it on the street?), and a falling intonation for wh- questions (Where did he find it?) and statements (He found it on the street.). Yes or no questions (Did he find it on the street?) often have a rising end, but not always. Some languages like Chikasaw and kalaallisut have the opposite pattern: rising for statements and falling with questions.