SME
Grade 8 Science · Problem type
Louder, or higher pitched?
Use this for “How do the vibrations compare for a louder sound versus a higher-pitched one?”
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What changed about the wave?
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Assumptions
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Loudness is amplitude, how far the source moves each vibration.
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Pitch is frequency, how many vibrations each second.
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Related lessons
Wave properties and the electromagnetic spectrum
Main lesson
Colors of visible light
Use this for “Which color of light has the longest wavelength?” and “How many waves of green light fit in one millimeter?”
Wave speed: frequency times wavelength
Use this for “A wave on a rope has a frequency of 2 Hz and a wavelength of 1.5 m. How fast does it travel?”
The spectrum from longest wave to shortest
Use this for “Order these waves from longest wavelength to shortest.”
Digital or analog signal?
Use this for “Why are digitized signals a more reliable way to store and send information?”