Sound waves, ultrasound and seismic waves

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By the end you’ll be able to

describe sound waves as longitudinal vibrations that require a medium and explain how they are produced and transmitted
relate the amplitude of a sound wave to loudness and frequency to pitch
compare the speed of sound in solids, liquids and gases and explain these differences using the particle model

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describe ultrasound as sound above the normal human hearing range and explain its use in imaging, breaking down kidney stones and industrial testing

distinguish between primary and secondary seismic waves and explain how seismic evidence reveals the structure of the Earth

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