Vocabulary
The Ear
True or False
Sounds
How Loud?
100
What is VIBRATION?
Fast movement going back and forth
100
A tube-like passage inside the ear is called the __________.
ear canal
100
TRUE or FALSE. Sounds are caused by vibrations.
TRUE
100
Name 2 ways you, as a person, can make sound.
walking, talking, hitting things together, playing an instrument, tapping.
100
What does a "decibel" measure?
How loud or soft a sound is.
200
Vibrations traveling through the air that can be heard are called _____________.
sound waves
200
The ______________ catches the sound and sends it down the ear canal to the middle ear.
outer ear
200
TRUE or FALSE. The loudness or softness of a sound is measured in decibels.
TRUE.
200
What is NOISE POLLUTION?
irritating, unwanted, (often loud) man-made noises.
200
What is louder, a jet engine at takeoff or a fire cracker?
a jet engine at 140 decibels. (a fire cracker is approximately 125 decibels)
300
What is VOLUME?
How loud or soft the sound is.
300
In the middle ear, when sound hits the ___________, it vibrates or moves.
eardrum
300
TRUE or FALSE. We observe sound using our eyes.
FALSE. We observe sound using our EARS.
300
Name 2 sounds that might cause noise pollution.
screaming or yelling, automobiles, loud music, planes, construction equipment.
300
What is the risk of your ears being exposed to noises that are too loud?
Temporary or permanent hearing loss
400
What is PITCH?
The highness or lowness of a sound.
400
Name the 3 small bones that vibrate inside the middle ear.
hammer, anvil, and stirrup
400
TRUE or FALSE. If you shorten the string on an instrument, the pitch becomes lower.
FALSE. If you shorten the string on an instrument, the pitch becomes HIGHER.
400
Complete the energy chain. Strumming >> ___________>> guitar notes/sounds
string vibration
400
At what approximate decibel level is a faint sound or whisper?
25-35 decibels.
500
The system in which energy is transferred from one object to another is called an ______________.
energy chain
500
Tell 3 FACTS about the COCHLEA.
It is in the INNER EAR. It is a CURLED TUBE. It is filled with LIQUID. It has TINY HAIRS. The tiny hairs are connected to nerves that send MESSAGES to the brain.
500
TRUE or FALSE. The ear canal sends sound messages to the brain.
FALSE. The AUDITORY NERVES send sound messages to the brain.
500
If you wanted to build something that makes sound, what do you have to think about?
what type of material, what will vibrate, how will the energy be input (blow into, hit, pluck, strum...)
500
If you attend a Jonas Brothers concert and are sitting closer to a speaker, after how many minutes would you run the risk of hearing damage?
7-10 minutes
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