11.6 Electromagnetic waves Flashcards
1
Q
What do other waves need to travel through but em waves do not need to?
A
A medium. Electromagnetic waves do not need a medium, they can travel through a vacuum.
2
Q
What is an electromagnetic wave?
A
An electromagnetic wave is a type of wave that consists of oscillating electric and magnetic fields that are perpendicular to each other and to the direction of the wave’s propagation.
3
Q
What is the electromagnetic spectrum?
What is the speed that electromagnetic waves travel at?
A
Radio waves, microwaves, infrared, visible, ultraviolet, x-rays, and gamma rays
3.00 x 10^8 meters per second
