The invention relates to an experimental device, and in particular relates to a
sound propagation experimental device used for
physics teaching. The invention aims at solving the technical problem ofproviding a
sound propagation experimental device which is used for the
physics teaching, can carry out experiment on
sound propagation, is visual in teaching, can enable students to have better understanding and is good in teaching quality. For solving the technical problem, the sound propagation experimental device used for the
physics teaching comprises a base plate, a vertical plate, a transverse plate, a plug, a
bottle, a mounting plate, a vacuum meter and a
mobile device, wherein the vertical plate is arranged at the left side of the top of the base plate, the
mobile device is arranged at the upper part of the right side surface of the vertical plate, a mobile component of the
mobile device is connected with the transverse plate, and the plug is arranged at the right side of the bottom of the transverse plate. The experimental device provided by the invention has the advantages that a
buzzer does not need to be put into the
bottle by an operator by virtue of a sound producing device, both time and labor are saved, and the effects of carrying out experiment on sound propagation, being visual in teaching, enabling the students to have better understanding and being good in teaching quality are achieved.