A radio wave is a kind of electromagnetic wave.
radio wave
Void+electricity
Radio wave + radio wave will make radiation.
yes, electromagnetic wave is a radio wave
A radio
Electromagnetic waves carry radio, television, and telephone information.
We would call any wave longer than 1 millimeter a "radio wave".
Radio Wave + Radio Wave = Radiation
Microwaves
Water is not a wave. Waves on a water surface, on the other hand, do indeed have similarities with other types of waves in physics, including radio waves.
AM and FM are modulation types, that can probably be used for different kind of waves; but they are usually applied to radio waves. Radio waves are a kind of electromagnetic waves.
The radio wave I believe.