Characteristics of Sound
Pitch
Hearing
100
Sound is a wave that transmits disturbances produced by a ___________ object. The disturbances that travel in a _____ _______ are vibrations. A) Pitch and Mechanical waves B) Compression and Longitudinal waves C) Vibrating and Sound waves D) I don't know
What is C) Vibrating and Sound waves
100
What is pitch?
What is the highness or lowness of a sound
100
The human ear has three parts: outer ear, middle ear, and inner ear. Each part of the ear serves a specific purpose in the task of detecting and interpreting sound. Which part of the ear transfers the energy of a sound wave into the inner ear by vibrating the three bones found there.
What is the middle ear
200
What causes Sound waves? A) vibrations B) a medium C) a low pitch D) amplitude
What is A) Vibrations
200
_______ is the number of waves that pass a fixed point in a given time period.
What is frequency
200
What are the three bones that make up the middle ear?
What is the hammer, anvil, and the stirrup.
300
What are the two parts of a longitude wave.
What is Compression- the regions in which the particles that transmit energy are closer together. Rarefaction- particles that transmit energy are farther apart.
300
The more rapidly vibrations follow each other the result is a ________. A) High-pitched sound B) Low-pitched sound C) None of these D) All of the above
What is A) high-pitched sound
300
Picture a satellite dish that collects radio waves. What part of the ear does the example represent?
What is the outer ear- the curved formation on the outside helps funnel sound down a tube to the eardrum.
400
"Gabriel is standing on a street corner as an ambulance approaches. As the ambulance gets closer, the pitch of the sound waves is higher. Then, as the ambulance passes and moves father away, the pitch decreases. Based on this imformation, what do the sound waves from the siren have when the ambulance is being driven toward Gabriel?" A) The same frequency B) A higher frequency C) A decreasing frequency D) A lower frequency
What is B) A higher frequecy
400
What does pitch describe? A) how high or low a sound seems B) how many waves pass a point in a given time period C) the length of a wave D) the amplitude of a wave
What is A) how high or low a sound seems
400
How do vibrations get from the eardrum to cochlea? A) Air is pushed into the eardrum. B) Vibrations hit the outer ear. C) The brain first recieves a sound wave. D) They pass through the hammer, anvil, and stirrup.
What is C) the brain first recieves a sound wave. A sound is not actually heard until the brain receives and processes these signals.
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