absorption - the disappearance of a sound wave into a surface, amplitude - amount of energy in a sound wave (the height of the wave), frequency - the number of sound waves a vibrating object produces each second (Hz Hertz), medium - state of matter that sound needs to travel through (solid-fastest; liquid; gas-slowest), pitch - how high or low a sound is, reflect/reflection - the bouncing of a sound wave off of a surface, sound - energy that travels through matter in waves , volume/loudness - how loud or quiet a sound is (measured in decibels), transmit/transmission - sound passes through material,

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