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Frequency - the rate at which a vibration occurs, usually measured per second. Represented by letter "f." Equation for frequency is f = v/λ

Wavelength- The distance between the crests of a wave. Represented by the symbol "λ." The equation for wavelength is λ= f/v.

Wave Speed- The speed at which a wave travels through a medium. The speed of sound is about 343 meters/second. The equation for wave speed is v = fλ.

Amplitude- The length from the medium to the top of the crest.

Transverse Wave- A wave that does not require a medium to pass through. An example of a transverse wave is light.

Longitudinal Wave- A longitudinal wave is a wave in which the particle movement is parallel to the direction of the wave propagation. Sound is a good example because it can't travel through space

Electromagnetic Spectrum- The range of wavelengths or frequencies over which electromagnetic radiation extends.

Particle Model - A model in which instead of using waves to represent the information, particles are used, and represent the way they move.

Wave Model - A model in which the movement of energy between objects of matter is represented in the form of waves.