What happens when a source of energy causes a medium to vibrate?

Explained

Explanation:

Mechanical waves such as sound waves are created when a source of energy causes a medium to vibrate.

Energy vibrating a medium produces a energy wave that are mechanical in nature, which means that they require a medium through which they travel.

Mechanical waves are of two types

1. Transverse, in which crests and troughs are up and down.

2. Longitudinal, with compressions and rarefraction.