* Sound waves are longitudinal: This means the vibrations of the particles are in the same direction as the wave travels.
* Compression and rarefaction: As sound travels, it creates areas of high pressure (compressions) and low pressure (rarefactions) in the air.
* Particle movement: The air molecules are not actually moving along with the sound wave. They are simply vibrating back and forth, passing the energy from one molecule to the next.
Think of it like a line of dominoes. When you push the first domino, it falls and knocks over the next one, and so on. The dominoes themselves don't move far, but the energy of the push travels down the line. Sound waves work in a similar way.
