Key Objectives:Key Objectives: Investigate and understand the nature anddescribe the characteristics of two typesof waves.– Transverse Waves– Longitudinal Waveshttp://www.youtube.com/watch?v=27a26e2CnuM Model, label and draw diagrams of each.
The Longitudinal Wavehttp://www.youtube.com/watch?v=ubRlaCCQfDk&feature=related
CompressionThedensest/thickpart of alongitudinalwave
RarefactionThe spaced outsection of alongitudinalwave betweeneachcompression
Essential LearningsAll waves exhibit certaincharacteristics– Wavelength refers to the length of a waveor distance between two identical pointson a wave (Length)– Frequency refers to the amount of wavesin a period of time (Speed)– Amplitude refers to the size of the energywave (Strength)
Essential LearningsWavelength is inverselyproportional to frequency.– Wavelength increases Frequencydecreases– Frequency increases Wavelengthdecreases
Essential LearningsTransverse Waves– Energy travels perpendicular to thewave– Do not require a medium– Amplitude is the distance from therest position to the crest or trough ofthe wave.– Light travels in Transverse Waves
Essential LearningsLongitudinal Waves– Energy travels parallel to the wave– The portion of this wave where it iscrowded together is called thecompression– The portion where the spacebetween compressions is greatest iscalled the rarefaction.
Essential LearningsLongitudinal Waves– Requires a medium– Wavelength is the distance from onecompression to the next compressionof the wave.– Sound being produced by vibrationstravels in Longitudinal Waves