| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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Waves may be either transverse or longitudinal. |
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Name the two different types of waves. Review the difference between the types of waves using a slinky to demonstrate or phet animation https://phet.colorado.edu/en/simulation/fourier
or
https://phet.colorado.edu/en/simulation/legacy/wave-interference |
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The ripples on a water surface are an example of a transverse wave |
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What are the ripples on a water surface examples of? Show images of ripples in water r show using tuning fork in water ask students to suggest if they are transverse or longitudinal waves. |
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Longitudinal waves show areas of compression and rarefaction. |
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What types of waves show areas of compression and rarefaction. |
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Sound waves travelling through air are longitudinal. |
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What type of wave is a sound wave? Use the oscilloscope to show the types of waves and how the sound wave can be changed. Make the polystyrene pieces or cornflour mixture dance using the vibrations from the speaker. |
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Students should be able to describe the difference between longitudinal and transverse waves. |
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What is the difference between longitudinal and transverse waves. EW: Compare and contrast the difference between longitudinal and transverse waves |
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Students should be able to describe evidence that, for both ripples on a water surface and sound waves in air, it is the wave and not the water or air itself that travels. |
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Do the waves in air or the wave in the water travel? |
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Students should be able to describe wave motion in terms of their amplitude. |
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How can you describe wave motion? Students draw and label a transverse wave (last taught in year 8) |
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Students should be able to describe wave motion in terms of their wavelength. |
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How can you describe wave motion? |
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Students should be able to describe wave motion in terms of their frequency. |
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How can you describe wave motion? |
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Students should be able to describe wave motion in terms of their period. |
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How can you describe wave motion? |
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The amplitude of a wave is the maximum displacement of a point on a wave away from its undisturbed position. |
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What is meant by amplitude of wave. |
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The wavelength of a wave is the distance from a point on one wave to the equivalent point on the adjacent wave. |
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What is meant by wavelength? Use slinky's and/or lengths of string to model the effects of changing wavelength, frequency and wave speed. |
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The frequency of a wave is the number of waves passing a point each second. |
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What is the frequency of a wave? |
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Period = 1 / freqency T = 1 / f |
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What does period and frequency equal to? **combined classes teach the equation and recall wave labels in an additional lesson**
Practice using the wave equation to rearrange and calculate with changing units |
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The wave speed is the speed at which the energy is transferred (or the wave moves) through the medium. |
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What is wave speed? |
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All waves obey the wave equation: wave speed = frequency x wavelength v = f x λ |
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What is the equation that links the frequency, wave speed and wavelength? |
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Students should be able to identify amplitude and wavelength from given diagrams |
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Identify amplitude and wavelength from given diagrams |
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Students should be able to describe a method to measure the speed of sound waves in air. |
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What method could be used to measure the speed of sound waves in air. |
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