A radio converts electrical energy into vibrations.
Electrical energy refers to energy associated with the flow of electrons.
A radio converts the flow of electrons into vibrations.
what does a radio convert into vibrations?

[1] flow of protons
[2] Heart rate
[3] h2o
[4] encoded information
[5] Loud noises
[6] flow of electrons?
[7] television
[8] Through play