Here's why:
* Mechanical waves require a medium: Mechanical waves are disturbances that travel through a medium, which can be a solid, liquid, or gas. They need particles to vibrate and transfer energy.
* Empty space lacks a medium: Empty space, or a vacuum, has no particles for the wave to interact with.
Examples of mechanical waves:
* Sound waves
* Water waves
* Seismic waves
Waves that can travel through empty space:
* Electromagnetic waves: These waves, like light, do not require a medium and can travel through a vacuum.
Let me know if you have any other questions!