wave and its properties
TRANSCRIPT
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PARTS OF THE WAVE
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CREST - the highest point of the wave.
TROUGH - the lowest point of the wave.
AMPLITUDE - is the displacement from the resting position to the highest (or lowest) point of the wave.
WAVELENGTH – is the distance from one point to the next identical point of the wave.
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FREQUENCY – describes how often avibration occurs. It also specifies how manycomplete vibrations occur at a given time(usually one second).
1 1
F = or
T Period* The SI Unit of frequency is the HERTZ (Hz)
, equivalent to one cycle per second.
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PERIOD – is the time needed to complete one vibration.
1 1
T = or
F Frequency
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WAVE SPEED - is the rate at which the wave travels through a particular point.
Wave speed = Frequency x Wave length
or
wavelength
Wave speed =
period
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WAVELENGTH – distance from crest to crest.
The wavelength λ of a sinusoidal waveform traveling at constant speed v is given by:
v
λ =
f
where v is called the phase speed (magnitude of the phase velocity) of the wave and f is the wave's frequency.
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LOUDNESS - physiological sensation thatvaries from one person to another. Itdepends on the sense of hearing.
INTENSITY (I) - depends on the amplitudeof pressure variations within the soundwaves. The unit used for sound intensitylevel (B) is decibel (dB) , named afterAlexander Graham Bell.
QUALITY – enables to identify the sourceof sound because tones differ from oneanother.
PITCH – refers to the highness or lowness ofa tone. It is related to frequency.
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REFLECTION OF
WAVE
a.) REFRACTED- when wave travel from
one medium to another.
b.) DIFFRACTED- when wave pass
through a narrow opening and interfere
when they interact with other wave.
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TRANSVERSE WAVE
The vibrational direction of the particles in the medium is
up and down perpendicular to the direction of the wave.
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LONGITUDINAL WAVE
The vibrational direction of the particles of the medium is
parallel to the direction of the wave.
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Prepared by:
Katherine B. Pon-an Kristine Camille R. Robles Paul Nicko D. Ferrer Marjay G. Panganiban Joven M. Reyes
IV-1