Question

ound waves are longitudinal waves. They need a medium to travel through. They cause particles of the medium to vibrate parallel to the direction of wave travel. The vibrations can travel through solids, liquids or gases.​

Answer 1

Answer:

ound waves are longitudinal waves. They need a medium to travel through. They cause particles of the medium to vibrate parallel to the direction of wave travel. The vibrations can travel through solids, liquids or gases.

Answer 2

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Sound waves are longitudinal waves . They cause particles to vibrate parallel to the direction of wave travel. When travelling through air, the speed of sound is about 330 metres per second (m/s). Sound cannot travel through a vacuum because there are no particles to carry the vibrations.