18 Questions
Which of the following best describes the nature of sound waves?
Sound waves are longitudinal waves that are caused by vibrations and travel through a material medium.
What is the relationship between the speed of sound and the medium it travels through?
The speed of sound is faster in liquids and solids than in gases.
Which of the following factors determines the loudness of a sound?
The intensity of the sound wave.
What is the relationship between the pitch of a sound and the frequency of the sound wave?
A high-pitched sound corresponds to a high frequency.
What is the purpose of using sonar technology?
Sonar is used to detect and locate objects under water using sound waves.
What is the primary function of the human ear in relation to sound?
The human ear is used to detect and interpret the frequency and pitch of sound waves.
Which part of the ear does resonance occur in?
Inner ear
What happens when hair cells near the vibrating part of the basilar membrane are stimulated?
They send an impulse to the brain
What is the purpose of sonar?
Both B and C
How does sonar determine the distance to an object?
By measuring the time it takes for sound waves to be reflected back
What determines how much sound is reflected at a boundary between two materials?
The density of the materials at each boundary
What is a sonogram?
A computer image created from reflected sound waves
What is the frequency range for infrasound?
Below 20 Hz
Which of the following describes ultrasound?
Sound wave with frequencies higher than 20,000 Hz
What does resonance refer to in musical instruments?
A phenomenon that occurs when two objects naturally vibrate at the same frequency
What determines the natural frequency of an object?
Material from which the object is made
What kind of vibrations do human ears sense?
Mechanical vibrations in the air
What is an audible sound wave frequency that humans can perceive?
$40$ Hz
Explore how vibrations pass through different regions of the ear, how resonance occurs in the inner ear, and how reflected sound waves are utilized in determining distances and creating images. Discover the process of how specific frequencies cause vibrations in the basilar membrane and stimulate nerve fibers to send impulses to the brain.
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