Physics Classroom: Pitch and Frequency
This tutorial includes instructive graphics, interactive widgets, and a "Check Your Understanding" section to help students understand the relationship of frequency and pitch. It presents a conceptual foundation as well as related mathematics. It would be appropriate for Grades 9-12.
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Physics Classroom: Intensity and the Decibel Scale
This tutorial specifically explores the connection between energy transport and the intensity of a sound wave (a concept often misunderstood by beginning students), with example calculations to show the inverse square relationship between intensity and distance. It goes beyond the basics to describe the "decibel scale" (the logarithmic scale for measuring intensity) and explores subjective factors that affect sound perception in human hearing. Don't miss the Decibel Calculator widget!
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