waves

• wave speed = frequency x wavelength
• in transverse waves the oscillations are perpendicular to the direction of energy transfer
• in longitudinal waves the oscillations are parallel to the direction of energy transfer
• longitudinal wave are are sound waves
• transverse waves are light
• visible light


  ROYGBIV
• radio waves , micro waves, infrared , visible light, ultraviolet, x-rays , gamma rays
• radio waves are mainly used for communication
• radio waves can transfer energy to your car radio and TV
• microwaves can be used by satellited
• microwave oven also use microwaves - microwaves absorbed by water molecules in food