10.7 Reflection of Sound

Last updated at July 3, 2026 by

šŸ’” Sound bounces

Shout at a cliff and your own voice comes back — sound obeys the same reflection laws as light.

What is reflection of sound?
Reflection of Sound sound bounces off hard surfaces following the same laws of reflection as light; an echo is a common example.
  • Sound bounces off hard obstacles like walls, cliffs and water.
  • It follows the same laws of reflection as light: the incident and reflected directions make equal angles with the normal, all in one plane.
  • A common example of reflection is an echo .

↩ Recall — you first met the reflection of sound in Grade 8 Curiosity, Chapter 10.

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