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Pre-AP Waves and Oscillations Flashcards

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13228427154FrequencyThe Rate of Oscillation.0
13228427155What is another way to write hertz?cycles/second1
13228427156PhaseWhere in a cycle of oscillation, waves are synchronized.2
13228427157AmplitudeThe maximum value of an oscillation. In mechanics this is the maximum displacement from the equilibrium line.3
13228427158PeriodTime it takes to complete one oscillation.4
13228427159Period FormulaT = 1/f5
13228427160Simple Harmonic MotionRepetitive motion of an object that continuously reaches the same maximum displacement from the equilibrium line.6
13228427161Hooke's Law formulaF = kx7
13228427162Transverse WaveA wave that's medium displaces perpendicular to the direction of propagation; the motion is perpendicular to its equilibrium line.8
13228427163Longitudinal WaveA wave that's medium displaces parallel to the direction of propagation; the motion is parallel to it's equilibrium line9
13228427164CrestThe top of a wave.10
13228427165TroughThe bottom of a wave.11
13228427166Dampingthe tendency of vibrating object to lose or to dissipate its energy over time.12
13228427167LightAn example of an electromagnetic wave; moves as a transverse wave13
13228427168SoundAn example of a longitudinal wave; a pressurized mechanical wave.14
13228427169Electromagnetic WaveType of wave that can travel through a vacuum and does not require a medium to go from point A to point B.15
13228427170Mechanical WaveType of wave that can not travel through a vacuum and does require a medium to get from point A to point B.16
13228427171CompressionHigh density/concentration of energy on a longitudinal wave17
13228427172RarefactionLow density/concentration of energy on a longitudinal wave18
13228427173InterferenceWhen two waves interact with each other.19
13228427174Constructive InterferenceInterference of two waves with displacement in the same direction. This creates a "single larger" wave.20
13228427175Destructive InterferenceInterference of two waves with displacement in the opposite directions. This interference counteracts one another and can create a "single smaller" or even "nonexistent" appearing wave.21
13228427176Standing waveWhen interference occurs in such a way that there appears to be a wave not moving22
13228427177NodeA position on a standing wave where there is no displacement; has zero energy23
13228427178AntinodesA position on a standing wave that represents an extreme position relative to the equilibrium line; has maximum energy24
13228427179wave speedthe speed at which a wave travels25
13228427180wave speed formulawavelength x frequency26
13228427181speed formuladistance/time27
13228427182WavelengthThe distance between two corresponding parts of a wave28
13228427183Herts (Hz)Unit for frequency29
13228427184meters/secondunit for speed30
13228427185meterunit for wavelength31
13228427186wave pulsea single bump or disturbance that is in motion32
13228427187A sound's pitchdepends on frequency of the sound wave33
13228427188A light's colordepends on frequency of the light wave34
13228427189Decibel (dB)unit of measurement; measures loudness / intensity35
13228427190notea specific frequency of harmonics used with sound36
13228427191Harmonicswhole number multiples of the fundamental frequency37
13228427192resonant frequencyThe natural frequency at which standing waves are made in a particular medium; varies among mediums38
13228427193Beats or beat frequencyAlternating constructive and destructive interference resulting from two slightly different frequencies in unison; determined by taking the difference of the two interfering frequencies.39
13228427194Doppler effectAn observed change in the frequency of a wave when the source or observer is moving - sound wave40
13228427195loudnessthe intensity of sound waves, measured in decibels41
13228427196Brightnessintensity of light waves, measured in candelas42
13228427197fundamental frequencythe lowest frequency of vibration of a standing wave43
13228427198ROYGBIVColors of the visible spectrum in order of wavelength and frequency.44
13228427202Time Period of a Pendulum45
13228427203Time Period of a Spring46
13228427199TransparentAllowing light to pass through; clear viewing on the other side47
13228427200Translucentpermitting light to pass through, but not enough to allow clear viewing of objects on the other side48
13228427201opaqueimpossible to see through; preventing the passage of light49
13228461010red shiftthe change in the wavelength of light due to an object moving away from the observer.50
13228467217RefractionThe bending of a wave as it passes at an angle from one medium to another51
13228470912law of reflectionthe angle of incidence is equal to the angle of reflection52
13228477943red, green, blueprimary colors of light53
13228481293Polarized lensesreduce glare; allow light to enter through a single direction54
13228490074fiber opticsthin glass fibers that use total internal reflection to carry light55
13228492924speed of lightfaster in less dense materials56
13228498298speed of soundfaster in more dense materials57
13228500514DiffractionThe bending and scattering of a wave as it moves around an obstacle or passes through a narrow opening58
13228507300convergeto move toward one point59
13228509467divergeto vary; go in different directions from the same point60
13228568080laserlight amplification by stimulated emission of radiation61

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