viberation:an oscillation, or repeating back and forth motion, about an
equilibrium position.
wave:a wiggle in space and time;a disturbance that repeats regulrity in space and time and that is
transmitted progressively from one place to the next with no actual transport of matter.
wave period:
crets: one of the places in a wave where the wave is hieghest or the disturbance is greatest.
troughs:msjhhdgfsdhtsdkhdh jdhdhhsjdsyuuyefuyutsygfydgfffyshtfsusfutytsfdyvbrsvrvsduyreuureyuywkutejeytirtgjf gcebntthgdggdgytstsdrsff
vdgdg
amplitude:the distance from the midpoint to the maximum (crest) of a wave or equivalenently, from the midpoint to the minimum(trought)
wavelength: the distance from the top of the crest of a wave to the top of the following crest, or equivalently, the distance between successive identical parts of the wave.
frequency: the number of events (cycle,vibrations, oscillations, or or any reapeated event)per time; measured in hertz (or events per time)inverse of period.
hertz: the SI unit of frequency. One hertz (Hz) is one viberation per second.
transevrse waves:a wave with vibration at right angles to the direction the wave is traveling
longitudinal waves:a wave in which the vibration is in the same direction as that in which the wave is traveling , rather than at right angles to it.
doppler effect: the change in frequency of a wave due to the motion of the source or the receiver.
blue shift:an increase in the measured frequency of light from an approaching source
red shift:a decrease in the measured frequency of light
shock wave:a cone shaped wave produced by an object moving at supersonic speed through a fluid
sonic boom:the sharp crack heard when the shock wave that sweep behind a supersonic aircraft reaches the listener.