15 points! what are some differences and similarities between electromagnetic and mechanical waves?

Elecromagnetic waves can travel through a vacuum, but a mechanical wave cannot. Mechanical waves can only exist in a medium, such as air or water. Electromagnetic waves behave like waves and particles, but mechanical waves only behave like waves.

To a fellow spongebob-ian i will be glad to , the cheetah didn't get far on purpose because he's a cheetah  ( ͡° ͜ʖ ͡°)