Waves Definitions Physics

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15 Terms

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Wave

Disturbance which travels from one place to another through oscillations (vibrations). Transfers energy without transferring matter.

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Amplitude (A)

Maximum displacement from equilibrium produced by a wave

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Wavelength (λ)

Distance between a point on a wave and the same point on the next.

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Time Period (T)

Time taken for one complete wave to pass a point. (1 / frequency)

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Frequency

Number of waves passing a point per second. (1 / Time period)

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Medium

Substance or material through which a wave travels (Solids, liquids, gases)

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Transverse waves

Waves where the wave vibrations are perpendicular to the direction of the wave’s energy transfer.

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Longitudinal waves

Waves where the wave vibrations are parallel to the direction of the wave’s energy transfer.

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Longitudinal waves contain ____ where the particles move together, and ____ where the particles move apart.

compressions, rarefactions

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What does polarisation do?

Fix the direction of their oscillations to horizontal or vertical

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Give 5 examples of waves

Water, sound, light, seismic, radio

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Equation for Wave Speed

Wave speed = Frequency x Wavelength (V = F * lambda)

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What does pitch correlate to?

Frequency. Higher pitch = higher frequency of the vibration of the source.

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What does sound correlate to?

Amplitude. Louder sounds = Larger amplitude of the vibration of the source.

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Wavefronts

Any 2 places where the same phase occurs.