# Chapter 12, Waves, 12.2 Measuring Waves

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Displacement
The displacement of a vibrating particle is its direction and distance from its equilibrium position.
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Amplitude
The amplitude of a wave is the maximum displacement of a vibrating particle. For a transverse wave, this is the height of a wave crest or the depth of a wave trough from the middle.
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Wavelength
The wavelength of a wave is the least distance between two adjacent vibrating particles with the same displacement and velocity at the same time (eg. distance between adjacent crests)
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One complete cycle of a wave
One complete cycle of a wave is from maximum displacement to the next maximum displacement (eg. from one wave peak to the next.)
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Period
The period of a wave is the time for one complete wave to pass a fixed point.
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Frequency
The frequency of a wave is the number of cycles of vibration of a particle per second, or the number of complete waves passing a point per second. The unit of frequency is hertz (Hz)
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## Other cards in this set

### Card 2

#### Front

The amplitude of a wave is the maximum displacement of a vibrating particle. For a transverse wave, this is the height of a wave crest or the depth of a wave trough from the middle.

Amplitude

### Card 3

#### Front

The wavelength of a wave is the least distance between two adjacent vibrating particles with the same displacement and velocity at the same time (eg. distance between adjacent crests)

### Card 4

#### Front

One complete cycle of a wave is from maximum displacement to the next maximum displacement (eg. from one wave peak to the next.)

### Card 5

#### Front

The period of a wave is the time for one complete wave to pass a fixed point.