Students are using a mallet to hit a drum. The diagram below shows this action.
 Drum
 Drum
 When the mallet
 hits the drum,
 the drum skin
 begins to vibrate.
 particles of air
 compressed
 together
 particles of air
 compressed
 together
 Mallet
 particles of air
 moving apart wave of
 again
 compressed
 particles moving
 outward
 Which statement BEST describes the phenomenon illustrated in the model?
 Sound waves are being transmitted through the air in the drum.
 Sound waves are being transferred from the mallet to the drum.
 O Sound waves are being absorbed by the drum.
 Sound waves are being reflected by the drum.