Perhaps you have heard of the "speed of light" ?
Light is an electromagnetic wave, and its speed is the speed of all forms of electromagnetic radiation.
That speed is 186,282 miles (299,792 km) per second in vacuum, slightly less in any material medium.
it depends on how the motion got started and what forces are acting. but for electromagnetic radiation, it only has one speed - the speed of light - no matter what frequency or wavelength or intensity of the radiation.
electromagnetic waves can travel through vacuum while water waves travel in water.
Electromagnetic waves are waves which can travel through the vacuum of outer space.
The biggest difference is that mechanical waves require a medium to travel through and electromagnetic waves do not.
They travel at the same speed of light that is 299,792,458 msec-1
300,000 kilometers/second, or 300,000,000 meters/second.
That would be electromagnetic waves.
Electromagnetic waves can travel through empty space.
what is a form of energy that travels as waves through the air and some solids and liquids call?