Sound Flashcards
Frequency
The number of waves per second
Amplitude
The height of a wave
Pitch
High or low sound. High frequency = high pitch
Loudness
Big amplitude = louder sound
What is sound?
Sound is what we hear around us
What is noise?
Noise is unwanted sound. Rock music could be a pleasureable sound for one person but a annoying noise for another
How does sound travel through solids liquids and gases?
Sound waves are formed when a vibrating object causes the surrounding material to vibrate
What are the parts of the ear?
pinna,ear drum,ossicles,cochlea,auditory nerve,ear canal
What is loudness measured in?
Decibels
How does the ear work?
Sound enters the ear canal and makes the ear drum vibrate. Then the ossicles vibrate,which knock into the cochlea’s membrane and the fluid inside the cochlea triggers the auditory nerve to pass the sound to the brain
What are the effects of excessive exposure to loud sounds?
This can cause hearing loss and deafness
Ways of preventing hearing loss
Use noise cancelling head phones or ear plugs
