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Waves, Sound, and Light
Enduring Understandings
A wave is a pictorial representation of a vibrating object in space and time.
A wave motion represents the spreading of energy in space and time without moving the medium.
Waves can be described and differentiated by their characteristic properties like amplitude, frequency, and wavelength.
Longitudinal and transverse waves vary in the direction of vibration of the medium in comparison to the direction of wave propagation.
Sound causes molecules of a medium to vibrate back and forth. This series of compressions and rarefactions produces waves.
Speed of sound through a given medium depends on the temperature and its properties like elasticity and inertia.
Relative motion of the source or the receiver causes a shift in the frequency and the wavelength of the original wave.
Superposition of waves results in constructive, destructive and partial interference wave patterns.
Doppler’s effect is the change in frequency and wavelength of a wave due to motion.
Speed of light in vacuum is a universal constant.
Electromagnetic Spectrum is the complete range of frequencies of electromagnetic waves that includes light.
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