rhythmic disturbances that carry energy without carrying matter - Wave, a wave that requires a medium to transfer energy/propagate - Mechanical Wave, a wave that does not require a medium to transfer energy/propagate - Electromagnetic Wave, a way in which the energy causes the matter in the medium to move up/down or back/forth at right angles (i.e. perpendicular) to the direction the wave travels - Transverse Wave, a wave in which the particles in the medium vibrate parallel to the direction in which the wave travels - Longitudinal Wave , the largest distance that a wave displaces particles from their resting position; the height of the wave - Amplitude , the high points on a transverse wave - Crest , the low points on a transverse wave - Trough, the distance between two successive crests or troughs of a wave; represented by the variable 𝜆; measured in meters (m) - Wavelength , the number of wavelengths that propagate passed a certain point in a certain amount of time; represented by the variable f; measured in Hertz (Hz) - Frequency , the time it takes for one full wavelength to propagate passed a certain point; represented by the variable T; measured in seconds (s) - Period, the places where the particles are further apart - Rarefaction, the places where the particles are closer together - Compression, when the waves that meet have displacements in the same direction - Constructive Interference , when the waves that meet have displacements in the opposite direction - Destructive Interference , when a wave strikes a boundary and is bounced back - Reflection , when a wave strikes a boundary, passes through, and is bent in the process - Refraction, The ratio of the speed of light in a vacuum to the the speed of light through a specific medium - Index of Refraction, part of the electromagnetic spectrum with the largest wavelength and least amount of energy; used in communications - Radio Wave , the highest energy and lowest wavelength waves on the electromagnetic spectrum; used in cancer treatment - Gamma Rays , the part of the electromagnetic spectrum that humans can see; right in the middle of the spectrum for energy and wavelength - Visible Light Spectrum , part of the electromagnetic spectrum with more energy than radio waves but less energy than infrared; used in cooking appliances and radar - Microwaves , part of the electromagnetic spectrum that has less energy than the visible light spectrum but more energy than microwaves; used in thermal imaging and remote control - Infrared , part of the electromagnetic spectrum; more energy than ultraviolet rays but less energy than gamma rays; used in medical imaging - X-Rays , part of the electromagnetic spectrum that has higher energy than the visible light spectrum but less energy than x-rays; used in curing materials and sanitization - Ultraviolet Rays , the angle at which a wave encounters a boundary - Incident Angle , the source ray of light that encounters the boundary - Incident Ray, the angle that the light is reflected - Reflected Angle , the reflected light - Reflected Ray, the angle that the light is refracted - Refracted Angle , The refracted light - Refracted Ray , Electromagnetic field of radiation/energy; can behave as both a wave and a particle. - Light,

Physics Vocab Unit 8

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