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Crest

the highest point of a wave

Amplitude

the maximum distance that the particles of a wave's medium vibrate from their rest position

Diffraction

the bending of waves around a barrier or through an opening

Frequency

the number of complete waves that pass a given point in a certain amount of time

Hertz

the unit of frequency, equal to one cycle per second

Constructive interference

the interference that occurs when two waves combine to make a wave with a larger amplitude

Destructive interference

the interference that occurs when two waves combine to make a wave with a smaller amplitude

Longitudinal wave

a wave in which the vibration of the medium is parallel to the direction the wave travels

Mechanical wave

waves that transfer energy through matter

Medium

the material through which a wave travels

Period

the amount of time it takes one wavelength to pass a point

Reflection

the action of a wave bouncing off an object

Refraction

The bending of a wave as it passes at an angle from one medium to another

Transverse wave

a wave that moves the medium in a direction perpendicular to the direction in which the wave travels

Trough

the lowest point of a wave

Wavelength

the distance between the crest of one wave and the crest of the next wave

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