Sound characteristic

Type of wave

sound waves,
and vibration in spring

●ripples on the surface of water

●vibrations in a guitar string.

Sound wave

There are some characteristic of sound waves :

Sound has both volume and pitch.
Volume is seen as an increase in amplitude of the sound wave.
Intensity: The loudness of a sound

High volume : High intensity

Small Volume : Low intensity.

- The loudness of a sound is measure using SOUND INTENSITY
MATER. Unit : decibels ( db )

When presenting sound in a form of wave:

The amplitudes of a wave is how far the particles move as the
vibrations pass.

- Larger amplitudes = Louder of the sound = high volume

- Smaller amplitudes = Smaller of the sound = low volume

-Pitch : how high or low a sound

is.
- The frequency of a sound wave is the

number of complete waves pass a point each second.

- Unit of frequency is hertz ( hz ).

High frequency sounds = high pitch.

- A bell that vibrates 400 times per

second has a frequency of 400 Hz.

In an instrument, shorter bar vibrate faster make high pitch sound

Longer bar vibrate slower make low pitch sound.

https://ophysics.com/w6.html

Intensity of different sound.

Medium for sound transmission