Light and Color - Mission LC1 Detailed Help

Which of the following are not examples of electromagnetic waves? List all that apply in alphabetical order with no commas or spaces between letters.

Definition of Mechanical Wave and Electromagnetic Wave:
There are a variety of ways to categorize waves. One way to categorize waves is to say that they are either mechanical waves or electromagnetic waves.

mechanical wave is a type of wave that requires a medium in order to transport its energy from one location to another.

An electromagnetic wave is a type of wave that can transport its energy through a region of space void of matter. Electromagnetic waves can travel through a vacuum.

Electromagnetic Spectrum:
Electromagnetic waves exist in a wide range of frequencies. The range of frequencies is referred to as the electromagnetic spectrum. The spectrum of electromagnetic waves is subdivided into regions - each with its own name. Many of the regions of the electromagnetic spectrum have familiar names such as microwave, X-rays, ultraviolet, visible light, infrared, radio, and gamma radiation.

Sound waves travel from the source to the observer by means of particle-to-particle interaction. The source disturbs the first particle of the medium - perhaps by pushing it forward. This particle in turn pushes on the second particle of the medium, pushing it forward as well. The second particle pushes the third particle forward that in turn pushes the ... . As a result of this particle-to-particle interaction, a sound wave travels through the medium from one location to another. But don't be fooled! If there were no particles in the region of space surrounding the source, then there would be no sound wave traveling through that region of space. Sound waves are unable to travel through a vacuum. They are not electromagnetic waves.