1. Fill in the gaps using: vibrations, amplitude, frequency x2, particles wave, nearby, energy, high, bump

Sound is a ____ caused by _____. The vibrations of a speaker cause ____ is a air _____ to start vibrating too, and they bump into their neighbours, transferring the ______ in the sound wave from the speaker to your ear. The number of vibrations per second is the _____, and the _____ is the height or the volume of the wave. A loud sound has a ______ amplitude,and a high pitched sound has a high______.​