# The wave equation

I can describe how the frequency of a wave moving through a particular medium is related to its wavelength.

# The wave equation

I can describe how the frequency of a wave moving through a particular medium is related to its wavelength.

## Slide deck

## Lesson details

### Key learning points

- The speed of a wave depends on the medium it is travelling through
- The speed of a wave does not depend on its frequency
- For a given wave speed, the higher the frequency, the shorter the wavelength
- For a given wave speed, the longer the wavelength, the lower the frequency
- Wave speed = frequency x wavelength

### Common misconception

In, v = f x λ, speed is dependent on frequency and wavelength, rather than the medium.

Focus on speed being property of a medium and equation not being as an equation with three interdependent variables.

### Keywords

Wave equation - wave speed = frequency × wavelength (v = f x λ)

Wave speed - the speed of a wave in a particular medium (material)

Frequency - the number of waves produced each second. Frequency is measured in Hertz (Hz)

Wavelength - the distance between one wave crest (or trough) and the next

Lambda - (λ) the symbol used for the wavelength of a wave

### Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

## Video

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## Worksheet

## Starter quiz

### 6 Questions

shake the end up and down a greater distance

shake the end up and down a smaller distance

shake the end up and down more times each second

shake the end up and down less times each second

## Exit quiz

### 6 Questions

f in Hz

λ in m

T in s

v in m/s