Sound Waves
Sound is made when things __________.
Vibrate.
When sound travels down the ear canal what vibrates first?
The EAR DRUM.
Name 3 sounds that can damage our hearing.
Plane taking off, Concerts, Construction machines, loud music on headphones ...........
If you have a skinny elastic and a thick elastic, which one will make the higher pitch sound?
The skinny elastic.
What is Vibration?
Is the motion of the particles when you more something.
The highness or lowness of sound is called its _______.
PITCH.
The part of the ear that funnels the sound is called...
PINNA or OUTER EAR.
A pair of elastic fibered bands that vibrate to produce sounds in the human body is called the ________________.
Our VOCAL CHORDS.
What are Sound Waves?
Sound Waves are the Vibrations that travel through air, water and solid.
How do bats hear sounds?
Echolocation
Sound can travel through...
States of matter: SOLID, LIQUID or GAS
What three bones make up the inner ear?
The Hammer, Anvil and Stirrup.
What is the BEST CONDUCTOR of sound?
A SOLID.
What is a Megaphone used for?
To amplify sound (make it loud)
How many decibles is an airplane sound?
110 - 140 dbs
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?
The auditory nerve.
What is the WORST CONDUCTOR of sound?
AIR.
What unit do we use to measure how loud a sound is?
DECIBEL.
The UNIT to measure number of times sound vibrates per second is called...
Hertz
If a sound wave is SHORT and VERY SPREAD APART it is...
It is QUIET and LOW PITCH.
What is the spiral shaped part of your ear called?
The cochlea.
What is inside of the cochlea?
Fluid and tiny hairs.
Auditory means ______.
Sense of hearing.
A small space in which the sound waves bounce off each other to amplify the sound.
A Resonance chamber