amplitude - The height of a wave. Usually measured from the wave's resting point to the peak of the wave., wavelength - The distance between wave peaks. Usually measured from the peak of one wave to the peak of the wave next to it., energy - It makes things happen! (Or more formally: the ability to do work), wave peak - The highest point on a wave. Also called the crest., sound waves - Vibrations of air particles that transmit sound. Sound waves are a type of longitudinal wave., transverse waves - When the disturbance moves perpendicular to the direction of the wave. Put simply: When a wave moves up and down., longitudinal waves - When the disturbance moves parallel to the direction of the wave. Put simply: When a wave moves forward and back., waves - Regular patterns of motion that transfer energy from place to place.,

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