Properties of EM + radio waves.

What do EM waves have?

A wide range of frequencies.

What can EM waves do?

They can be absorbed or produced by changes inside an atom or nucleus.

An example of EM waves produced:

Gamma rays are produced by changes in the nucleus of an atom.

What can radio waves produce?

By oscillations in an electrical current.

What happens when radio waves are absorbed by a receiver aerial?

They may create an alternating current with the same frequency as the radio waves.