Question

When does a polythene bag make a noise? What is this noise like?

Answer 1

when a polythene bag is moved or touched it makes a sound the sound is harsh

not sure but i think this is the answer

Answer 2

Plastic bags when crumbled make a crackling and crushing sound.

This sound is because of the ridges and the creases.

The reason for this sound is that the polymers are extended and crystallized in order to make the polythene shoddy and solid.

This makes it increasingly impervious to physical control and when you put resistance to change the shape, the energy is discharged as sound.