Intensity and Loudness A-level AQA

AQA A-level Physics Option B lesson on intensity level, decibels and hearing loss. 14 editable slides, 23-mark worksheet and mark scheme.
What’s in the PowerPoint
• A logs starter, with answers in the speaker notes
• The range of hearing and the threshold of hearing curve
• The decibel scale, IL = 10 log(I/I₀), with two worked examples
• The dBA scale and equal loudness curves
• Hearing loss from age and noise
• A common mistakes slide
• Six check questions with answers, and an exit ticket
• Teacher notes in the speaker notes throughout
What’s in the worksheet (23 marks)
• Recall of hearing range and the dBA scale
• Sketching the threshold of hearing
• Decibel calculations both ways, including adding sources
• Exam-style questions on equal loudness curves and hearing loss
• A full mark scheme with mark points, on separate pages
Good for
First teaching, revision, homework, cover lessons or independent study. Both files are fully editable in PowerPoint and Word.