Article: Questions and answers for kids. (Originated from Knight-Ridder Newspapers)

Q. Can you tell me who invented the tuba and how long ago it was invented? _ Chuck Oehrlein. 
A. These large brass instruments were being made during the 1820s in Europe. However, in 1835, a bass tuba was patented by the bandmaster Wilhelm Wieprecht and the instrument maker Johann Gottfried Moritz. This instrument had a special new valve that these two men also patented. The new valve was called a Berliner-Pumpe, and was a short valve of large diameter. Richard Wagner and Gustav Mahler were among the first composers to include passages for the tuba in major musical works. 
Q. Why do you shiver when you get cold? _ Linda Goldstein. 
A. People shiver automatically when ...

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