Sounds waves are like other waves. What 3 things do they have?
Wavelength ,frequency and amplitude
Thea amplitude of a wave reflects to the loudness
The frequency and wavelength of a soundwave relate to the pitch
What is the normal range of human frequency?
20 Hz to 20 kHz (20000 Hz)
Sound can travel through liquids and solids, as well as air
Sound ,in any medium, is caused by the vibration of all the particles that make up the medium
In a solid object, oscillation from sound waves can cause the entire object to vibrate with the same frequency as the sound wave
The conversion of sound waves to vibrations only occurs over a limited range of frequencies - the range of frequencies that can be converted is dependent on the structure of the object
In the ear , sound waves cause the ear drum and other structures to vibrate - this vibration is heard as sound
What limits human hearing?
The limited range of conversion
Examples of sound waves being converted to vibration include :in the ear drum , by a microphone , or a glass being shattered by an opera singer
The higher the frequency of a sound wave , the higher the pitch
