Changing electric field produces magnetic field and changing magnetic field produces electric field.

Electromagnetic waves are invisible but detectable. Only visible light is seen by

humans.

Electromagnetic waves CANNOT travel through a vacuum (empty space).

Electromagnetic waves travel at a constant speed in a given medium and at a

rate of 3.0 x 10^8 m/s in a vacuum.

Electromagnetic waves have an electric field that travel and move perpendicularly with the magnetic field.

Electromagnetic waves are longitudinal waves that can be transmitted and propagated in any medium and in vacuum.

Electric fields travel parallel with the direction of magnetic fields.

Electromagnetic waves form when moving charged particles release energy through a field.

Accelerating electric charges produces electric field.