The useful idea
- The useful idea
Sound is a phenomenon in which pressure disturbances propagate through an elastic material medium.
- How it works
In the context of physics, it is characterised as a mechanical wave of pressure or related quantities (e.g. displacement), whereas in physiological-psychological contexts it implies a hearing process.
- Why it matters
Though sensitivity to sound varies among all organisms, the human ear is sensitive to audio frequencies ranging from 20 Hz to 20 kHz.
Why this matters
Look for Sound the next time you notice this pattern in everyday life.
Try this
Look for Sound the next time you notice this pattern in everyday life.
Test your recall
Which idea belongs to the explanation of Sound?
- Why it matters
- How it works
- The useful idea — correct
Sound is a phenomenon in which pressure disturbances propagate through an elastic material medium.