Electromagnetic wave

An electromagnetic wave is a type of transverse wave.

Speed

All electromagnetic waves travel at the same speed in a vacuum: the speed of light, which is about 3.00\times10^8 meters per second (m/s).

Question	Answer
An electromagnetic wave is a type of what wave?	Transverse wave.
At what speed do all electromagnetic waves travel in a vacuum?	3.00\times10^8 meters per second (m/s), the speed of light.
What is the approximate speed of light in a vacuum?	3.00\times10^8 m/s.