physics test year 9

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9 Terms

1
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Transverse waves

A transverse wave is a wave that travels in perpendicular oscillations/ vibrations to the direction of travel. They are measured in peaks/ crests and troughs

2
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Longitudinal waves

A longitudinal wave is a wave that travels in parallel ocillations/ vibrations to the direction of travel. They are measured in rarefactions and compressions

3
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What is an example of a transverse wave

  • Any electromagnetic wave

  • Seismic S waves

4
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What is an example of a longitudinal wave

  • seismic p waves

  • Sound waves

5
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What is the wave equation

Wavelength x frequency = wave speed

6
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What is the other wave equation

Speed = distance/time

7
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What is a period

A period is how long 1 wave takes to complete.

This is also 1/frequency

Unit is T

8
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What is a frequency

A frequency is how many waves pass a certain point in 1 second

Measured in Hz

Also equals to 1/period

9
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What are the energy stores