Electromagnetic waves are transverse waves. They transfer energy from a source to an absorber. Electromagnetic waves form a continuous spectrum (shown below). All electromagnetic waves in the spectrum travel at the same speed in a vacuum (e.g. in space) or air.
Different Electromagnetic Waves
The spectrum is shown below:
You need to remember the order in both wavelength and frequency.
Our eyes only detect visible light, which is a very small part of the spectrum.
- What type of wave is an electromagnetic wave?
- In a vacuum, do microwaves travel faster or slower than x-rays?
- Your answer should include: Neither / Same / Speed