Vibrations & Sound
What is caused by vibrations that travel through the air?
Sound
Where do we hear sound?
Our ears
What is vibrating energy that looks like waves?
Sound waves
True or false: All noises sound the same.
False
Give an example of an object that we made vibrate in class to hear the sound.
tissue box, metal hanger, telephone, our voices, the balls, etc.
Something is __________ if it is moving back and forth really quickly.
Vibrating
What carries sound in the air?
Particles
What is the rate at which vibrations are produced?
Pitch
Sound that comes from living things is what?
Natural sound
What is the swirly thing in our inner ear called that helps us hear? Hint: We used pipe cleaners to represent this.
Cochlea
How loud of quiet something is.
Volume
What is the tube that runs from the outer ear to the eardrum?
The ear canal
A high pitched loud sound has what kind of sound waves?
Big sound waves
Sound that comes from inanimate objects is what?
Artificial sound.
When sound travels through our ears, it goes from the out ear, through the inner ear and auditory nerve all the way to our ______.
Brain
True or False: When an object is making a noise, it is really just that object moving back and forth really quickly.
True
What is the thin flap of skin that stretches tight like a drum and vibrates when sound hits it?
The eardrum
A low pitched soft sound has what kind of sound waves?
Small sound waves
A sound where the vibration is too high for us to hear.
Ultrasound
This is made by sound waves bouncing off of a hard surface.
Echo
What are the two thin bands of muscle in our throats called that vibrate when we speak?
What nerve connects the inner ear and the brain?
Auditory nerve
This depends on the amplitude of the vibration.
Loudness
A sound where the vibration is too low for us to hear.
Infrasound
What is the unit for measuring the loudness of sounds?
Decibels