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SAI INTERNATIONAL SCHOOL
                                                          Class8
                                                        Mind Map
                                                   Subject-Physics
                                                       CH-Sound
                                         Subtopic- Propagation of sound







                                           PROPAGATION OF SOUND

                                                 (TRAVELLING OF SOUND )









                                       MEDIUM                                       WAVE





                                                                                         ELECTOMAGNETIC
                                                                         MECHANICAL
                       SOLID            LIQUID            GAS                            (DOES NOT NEED A
                                                                       (NEEDS A MEDIUM)
                                                                                            MEDIUM)





                                              LONGITUDINAL                        TRANSVERSE

                                                                                   Vibration of particles of medium is
                                              Vibration of particles of medium
                                              is  parallel to direction of        perpendicular  to direction of
                                                                                  propagation of wave
                                              propagation of wave
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