The Ear
What is the difference between volume and pitch?
Volume = if a sound is loud or quiet
Pitch = if a sound is high or low
What is the range of decibels for sounds that is barely audible?
10 -20 dB
Name 3 examples most people think are pleasant sounds.
soft music, pitter patter of rain, car stereo, hummingbird, guitar playing
What is the part of the ear called that carries the sound from the ear to the brain?
auditory nerve
Sound travels in _________.
waves
If something is vibrating very quickly it will have a _________________ pitch.
If something is vibrating very quickly it will have a high pitch.
What is the hearing range for normal conversations, sewing machine, and normal city noise?
60 - 65 dB
Name 3 examples what most people think are unpleasant sounds.
crying, snoring, thunder, police siren, door slamming
Sound waves spread in all _________________.
directions
Draw a wavelength for a sound that is loud
ask your teacher
What is the range of decibels for sounds that is in the danger range?
100 - 140 dB
Our ears help keep us ________ and help us ___________.
Our ears help keep us safe and help us communicate.
What is the "snail" shaped part of the ear called?
Cochlea
Sound can give us ____________________ or acts as a ________________.
Sound can give us information or acts as a warning.
If something is vibrating very slowly it will have a _______________ pitch
If something is vibrating very slowly it will have a low pitch.
Subway, factory, alarm clock, snowmobile are in the ____________ range. Prolong exposure at ________ at ___________ hours or less will cause hearing loss.
Hearing damage range. Prolong exposure at 85 - 90 dB at 8 hours or less will cause hearing loss.
Name 3 ways you can affect a pitch of an instrument.
Length, Tightness, Thickness
short, tight and or thin --> high pitch
long, loose, and or thick --> low pitch
The ____________________ gathers sound and the sound is funnelled through the __________ to the eardrum, which __________ when sound reaches it.
The pinna gathers sound and the sound is funnelled through the ear canal to the eardrum, which vibrates when sound reaches it.
The unit for measuring sound is __________.
The unit for measuring volume is ___________.
The unit for measuring sound is Hertz (Hz).
The unit for measuring volume is decibles. (dB)
Draw a wavelength for a high pitch sound and another wavelength for a low pitch sound.
ask your teacher
Can you give some examples of noises that causes immediate danger zone?
Live rock music, thunderclap, stereo headphones at full volume, gunshot blast, jet taking off
Name 3 ways and explain how sound and the way words can influence the message.
Tone, volume, and emphasizing different words.
- if we say the words louder or softer
- if we change the tone from a happy tone to an angry tone
- if we emphasize different words in a message