Sound Waves
Sound is made when things _____________.
vibrate
When sound travels down the ear canal it causes this to vibrate first.
Ear drum
Name 3 sounds that can damage our hearing.
plane taking off
concerts
construction machines
If you have a skinny elastic and a fat elastic, which one will make the higher pitch?
Skinny elastic
This is a form of energy that is generated when matter vibrates then travels in waves...
Sound
The highness of lowness of sound is called its______.
Pitch
The part of the ear that funnels the sound.
The pinna or outer ear
A pair of elastic fibered bands that vibrate to produce sounds in the human body is called the _________.
Miss L made a guitar with a ruler, two elastic bands and a box. He wants to make the sound louder. What should we do?
a. use one elastic
b. use a larger box
c. pluck the elastics harder
d. pluck the elastics more gently
Pluck the elastics harder
This is a term for when a sound wave bounces or is reflected from an obstructing surface...
Echo
Sound can travel through...
States of matter: solid, liquid or gas
What three bones make up the inner ear?
hammer, anvil and stirrup
What is the best conductor of sound?
Solid
If you take a ruler and hang 20 cm off the edge of the desk and pull down would it cause a high or low pitch sound?
low pitch
What is the term when you are unable to hear sounds...
deaf
If a sound wave is TALL and CLOSE TOGETHER it is...
Loud and high pitch
What nerve carries a message about the sound to the brain?
auditory nerve
What is the worst conductor of sound?
Air
What unit do we use to measure sound?
Decibel
This is a term for when sound waves are stopped or absorbed in softer solids and are put around rooms so it isn't heard...`
Soundproofing
If a sound wave is SHORT and VERY SPREAD APART it is...
Quiet and low pitch
What is the spiral shaped part of your ear called?1
Cochlea
What is located in the cochlea?
liquid and tiny hairs
Auditory means ______.
Earwax is good for your ears because...
Keeps dirt from getting in and also fighting off infection