Question

Which mechanical waves needs a medium to travel through?

Answer 1

The answer is Transverse,longitudinal,and surface waves



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Answer 2

At mechanical waves need a medium to travel in order to transport their energy from one location to another.  
Mechanical waves require a medium to travel through so that they can transmit energy. Some examples of mechanical waves are water waves, sound waves and the waves of a slinky or jump rope. The medium through which a mechanical wave moves through can be a fluid, solid or gas.