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WorksheetsPhysics Chapter 6: Interaction of Sound and Media Quiz
Total questions: 10
Worksheet time: 5mins
What does a positive decibel value indicate?
The intensity is constant.
The intensity is decreasing.
The intensity is increasing.
The intensity is zero.
What is the logarithm of 1000?
1
2
4
3
Which of the following is a primary component of attenuation?
Reflection
Absorption
Diffusion
Refraction
What is the unit of impedance?
dB
Hz
Rayls
Watts
What does a -10 dB change in intensity mean?
The intensity has doubled.
The intensity is one tenth of the original.
The intensity is unchanged.
The intensity is ten times the original.
What is the attenuation coefficient in soft tissue approximately equal to?
Half the frequency
The square of the frequency
Twice the frequency
The frequency
What is the term for the random redirection of sound in many directions?
Reflection
Absorption
Refraction
Scattering
What is the intensity reflection coefficient (IRC) when sound hits a boundary between soft tissue and bone?
Less than 1%
50%
99%
100%
What is the effect of higher frequency on Rayleigh scattering?
It decreases Rayleigh scattering.
It has no effect on Rayleigh scattering.
It increases Rayleigh scattering.
It reverses Rayleigh scattering.
What is the relationship between distance and attenuation?
They are inversely related.
They are exponentially related.
They are unrelated.
They are directly related.
