Do radio waves use a medium?

Think and discuss

Does the energy of the wave need matter
(solid, liquid or gas) in order to travel?

Do light waves use a medium?

Think and discuss

Does the energy of the wave need matter
(solid, liquid or gas) in order to travel?

Do sound waves use a medium?

Think and discuss

Does the energy of the wave need matter
(solid, liquid or gas) in order to travel?