In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels. Some Sound waves carry noises through the air to our ears. ... The medium moves back and forth as waves carry energy through it, but it does not actually travel along with the wave.Sound waves exist as variations of pressure in a medium such as air. They are created by the vibration of an object, which causes the air surrounding it to vibrate. The vibrating air then causes the human eardrum to vibrate, which the brain interprets as sound.