MY Ear
Mediums and speeds
What the Hertz?
Need to know sound vocabulary
CRCT Review
100
What is the name of the nerve that carries the impulse to the brain?
What is the Auditory nerve.
100
Who was the first man to break the sound barrier in 1947?
What is Chuck Yeager in the x-1.
100
What does Hertz measure?
What is frequency ( number of vibrations per second.)
100
With a wave we call it amplitude, with sound we say _____.
What is softness or loudness.
100
The atomic mass tells us the number of ______ and _____ an element has.
What is protons and neutrons (what is in the nucleus.)
200
Name the 3 smallest bones in the human boby which are also found in the ear.
What is the hammer, anvil and stirrup.
200
Which medium does sound travel slowest through?
What is a gas.
200
This term is given to frequencies below 20 vibrations/second.
What is infrasonic.
200
What is echolocation?
What is using sound to find objects.
200
Is oxidation a physical or chemical change?
What is Chemical. (rusting)
300
What is the purpose of the semicircular tubes?
What is balance.
300
What is reverberation?
What is a reflected sound from all directions. (firecracker)
300
What is the range of human hearing?
What is 20 - 20,000 Hz.
300
What 2 things can determine the Doppler effect?
What is if the object making the sound is moving OR if the observer is moving towards or way from the object.
300
What is the biggest difference between a mechanical and an electromagnetic wave?
What is a mechanical wave must have a medium!
400
These cilia hairs are the true "sound detectors." Where are they found?
What is the cochlea.
400
When a particle vibrates it transfers _______.
What is ENERGY!
400
Name 2 animals with ultrasonic frequency.
What is owl, bat, dog, anything above 20,000 Hz.
400
Loudness is measured using _____.
What is the decibel. (dB)
400
Where would we find the fulcrum in a first class lever?
What is in the middle. (between the effort and load)
500
Name the tube that connects the middle ear to the throat.
What is the Eustachian tube.
500
This measures sound waves and gives us a picture of them.
What is an oscilloscope.
500
What do we call the class of instruments that are strummed, plucked or bowed?
What is the STRING family.
500
AS the pitch decreases, the wavelength _______.
What is increases!
500
Kinetic energy is dependent on which 2 things?
What is mass and velocity.
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