amplitude, greatest height of a wave, wavelength, distance between similar points on a wave, frequency, number of wave repetitions in a certain time, crest, top point, trough, bottom point, circular wave, waves caused by a disturbance at a single point, plane wave, wave that moves in parallel lines, reflect, bounce off, refract, bend, absorb, take in, transmitter, part of a device that sends a signal, antenna, part of a device that takes in radio waves, receiver, part of a device that converts radio waves to a message.

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