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What is a Wave?
A disturbance that travels from one place to another transporting energy, but not necessarily matter, along with it.
Parts of waves?
Wavelength: the distance between any point on a wave, & the same point on the next phase. (length of the wave.)
Properties of waves?
Reflection: The reflection of sounds follows the law " angle of incidence equals the angle of reflection". e.g. echo.
Describe the Doppler Effect?
The Doppler Effect is the change in frequency of a wave for an observer, moving related to the source of the wave.