Flashcards
Ch. 11 Mechanical and Electromagnetic Waves
Cards in this deck (22)
- 1Wavevibration in space and time that carries energy
- 2Wave propagationthe movement of waves
- 3Transverse Wavesvibrate at 90 degrees to the direction of propagation
- 4Longitudinal Wavesvibrate parallel to the direction of propagation
- 5Wave periodthe time it takes a wave to complete one cycle in seconds
T - 6Wave frequencythe number of cycles that are completed in a certain amount of time
f= cycles per second - 7Wave amplitudedistance between the midline of a wave and its crest or trough
- 8CompressionHigh-density peak of the wave
- 9RefractionThe low-density part of the wave
- 10Electromagnetic Wavesa special type of wave that can travel without a medium (can travel through a vacuum, i.e. space)
- 11Radio Waveslowest frequency waves on our EM spectrum
- 12Specular reflectionreflection where all the light rays reflect off a surface at the same angle
- 13Normal (reflection)the imaginary line that is perpendicular to the reflective surface
- 14Incident raythe ray that initially comes from the light source and hits a surface
- 15Angle of incidenceangle created by the incident ray and normal line
- 16Angle of reflectionmeasures the position of the reflected ray in relation to the normal.
- 17Index of refractionnumber that represents how a medium refracts a light wave
n = c / v
(c= speed of light in vacuum, v= speed of light in substance) - 18Snell's Law
- 19Dispersive mediarefract every frequency of light in a different way (e.g. a prism)
- 20Dispersionthe separation of waves of various frequencies due to their differences in refractive angles
- 21Malus' Lawan equation that tells us how much dimmer the light is after going through a polarizer
- 22Photoelectric effect\describes the way electrons are excited and emitted from matter when they absorb the energy from light
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- Science Flashcards on Ch. 11 Mechanical and Electromagnetic Waves, created by Livia Cerna on 17/06/2020.
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- Livia Cerna
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