PI.7.4 Describe the slope of Systems and system the graphical representation models of wavelength vs. the inverse of the frequency in terms of Stability and change. the speed of the mechanical wave. PI.7.5 the mechanical Doppler Effect apparent change in the Systems and system – wave model to sound waves frequency of waves, as of sound or light, models and qualitatively and occurring when the source and observer are in quantitatively determine how motion relative to each other, with the the relative motion of a frequency increasing when the source and source and observer affects observer approach each other and decreasing the frequency of a wave as when they move apart described by the Doppler Effect. PI.7.6 Qualitatively and Pulses - disturbance that travel from one Patterns quantitatively apply the location to another location through a medium principle of superposition to describe the interaction of two mechanical waves or pulses. PI.7.7 Qualitatively describe Resonance reinforcement or prolongation of Patterns – the phenomena of both sound by reflection from a surface or by the resonance frequencies and synchronous vibration of a neighboring object Energy and matter beat frequencies that arise Sound waves wave of compression and – from the interference of rarefaction, by which sound is propagated in an sound waves of slightly elastic medium such as air different frequency and define the beat frequency as the difference between the frequencies of two individual sound wave sources.
PI.7.4 Describe the slope of the graphical representation of wavelength vs. the inverse of the frequency in terms of the speed of the mechanical wave. Systems and system models Stability and change. PI.7.5 the mechanical wave model to sound waves and qualitatively and quantitatively determine how the relative motion of a source and observer affects the frequency of a wave as described by the Doppler Effect. Doppler Effect – apparent change in the frequency of waves, as of sound or light, occurring when the source and observer are in motion relative to each other, with the frequency increasing when the source and observer approach each other and decreasing when they move apart Systems and system models PI.7.6 Qualitatively and quantitatively apply the principle of superposition to describe the interaction of two mechanical waves or pulses. Pulses - disturbance that travel from one location to another location through a medium Patterns PI.7.7 Qualitatively describe the phenomena of both resonance frequencies and beat frequencies that arise from the interference of sound waves of slightly different frequency and define the beat frequency as the difference between the frequencies of two individual sound wave sources. Resonance – reinforcement or prolongation of sound by reflection from a surface or by the synchronous vibration of a neighboring object Sound waves – wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air Patterns Energy and matter