Here's why:
* Mechanical waves are disturbances that travel through a medium by transferring energy from one particle to the next. This means they rely on the interaction between particles within the medium.
* Examples of mediums: Solids, liquids, and gases.
* Examples of mechanical waves: Sound waves, water waves, seismic waves.
Why mechanical waves can't travel through a vacuum:
* A vacuum lacks any particles for the wave to interact with. Without particles to transfer energy, the disturbance cannot propagate.
* Electromagnetic waves (like light), on the other hand, can travel through a vacuum because they are not reliant on a medium to propagate.
In summary: Mechanical waves need a medium to travel, and they cannot travel through a vacuum.
