GCSE PHYSICS - What is the Loudness of a Sound Wave? - What is the Pitch of a Sound Wave?

What is the Loudness and Pitch of a Sound Wave?

What is the Loudness of a Sound Wave?

The loudness of a sound depends on the amplitude of the wave.
The bigger the amplitude, the louder the sound.

What is the Pitch of a Sound Wave?

The pitch of a sound (how high the note is)
depends on the frequency of the wave.
The higher the frequency, the higher the pitch.

Sound is a longitudinal wave and so it is
difficult to show the amplitude and frequency on a diagram.
A microphone can change the sound wave into an alternating current
that can be displayed as a transverse wave on a CRO.
This makes it easier to show the affect of amplitude and frequency
on loudness and pitch (see the next page).

Headings Waves Sound Questions

gcsescience.com Contents Index Quizzes gcsescience.com