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SAI INTERNATIONAL SCHOOL
                                                          Class8
                                                     Lesson Notes
                                                   Subject-Physics
                                                       CH-Sound
                                          Subtopic-Production of sound


               There are three categories of musical instruments as follows:

                      Percussion Instrument.
                      Stringed Instrument.
                      Wind Instrument.

                    Stringed instrument is a musical instrument (as a violin, guitar,) sounded by
                       plucking or striking or by drawing a bow across its tight stretched strings.
                    Percussion instruments make sound by a stretched membrane being hit.
                    A wind instrument is a musical instrument in which a column of air is set into
                       vibration











































               Sound produced by humans
               In humans, the sound is produced by the voice box or the larynx.
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