Respuesta :
Answer:
a. Mechanical; Electromagnetic
Explanation:
__Mechanical_____ waves require a medium in order for energy to be transferred. _Electromagnetic_______ waves can either travel through a medium or through empty space.
Answer:
Mechanical; Electromagnetic
Explanation:
Mechanical waves require a medium in order for energy to be transferred. Electromagnetic waves can either travel through a medium or through empty space.
Compressional waves are a type of mechanical wave in which the particles of matter in the medium vibrate by pushing together and moving apart parallel to the direction in which the wave travels.