Medium....?

1) ocean wave's medium is _____


2) sound wave's medium is_____


3) radio wave's medium is______


4) light wave's medium is_______





( lost my science text book so I hope this works)

Medium....?
1 water


2. could be anything since sound can propagate through solid liquid or gas. Most often just air


3 and 4 no medium, both can exist in space
Reply:1. water


2. air (although sound is also transmitted by water and other liquids, and solids, especially metals)


3. vacuum.


4. vacuum.





Radio and light waves are both forms of electromagnetic radiation, which does not need a material medium to propagate in.
Reply:ocean=water


sound=air


radio/light=electromagnetic, these don't need a medium to travel through.