Complete the paragraph by filling in the blanks with appropriate terms.

Sounds is produced by making (1)_____. The force of impact between the two bodies and vibrations of bodies cause the (2)_________ around then to vibrate. (3)________ is converted into electrical energy using diaphragm present in the microphone and these signals then reach to the speakers and then converted back to sound. The sound is used as (4)__________ to relay meanings. The (5)__________ is an echo sounding device that uses sound propagation.​