Answer:
a transverse wave consisting of changing electric fields and changing magnetic fields
Explanation:
Electromagnetic waves are waves consisting of changing electric fields and magnetic fields oscillating perpendicularly to each other.
Moreover, the electric and the magnetic field oscillate in a plane perpendicular to the direction of propagation of the wave: for this reason, we say that electromagnetic waves are transverse waves.
All electromagnetic waves travel through a vacuum at the same speed, called speed of light, whose value is approximately
[tex]c=3\cdot 10^8 m/s[/tex]
Moreover, electromagnetic waves are classified into 7 different types according to their different wavelengths. From shorter to longer wavelengths, these types are called:
Gamma rays
X-rays
Ultraviolet
Visible light
Infrared
Microwaves
Radio waves
