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Questions and Answers
What is the term used to describe the quality or color of sound produced by instruments?
What is the term used to describe the quality or color of sound produced by instruments?
Which of the following is NOT a factor that influences timbre?
Which of the following is NOT a factor that influences timbre?
What is the typical sound level in a home?
What is the typical sound level in a home?
What is the relationship between frequency and pitch?
What is the relationship between frequency and pitch?
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What kind of sound wave is an ultrasound?
What kind of sound wave is an ultrasound?
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Which of the following is NOT a characteristic of sound waves?
Which of the following is NOT a characteristic of sound waves?
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What is the main application of sonar technology?
What is the main application of sonar technology?
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Which of these is a common use of infrasound?
Which of these is a common use of infrasound?
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How does sound intensity relate to decibels?
How does sound intensity relate to decibels?
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What is the phenomenon of sound waves bending around obstacles called?
What is the phenomenon of sound waves bending around obstacles called?
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Which of these is NOT a medium that sound can travel through?
Which of these is NOT a medium that sound can travel through?
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What is the primary reason why sound travels faster through solids than through gases?
What is the primary reason why sound travels faster through solids than through gases?
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What is the term for the change in direction of sound waves as they pass from one medium to another?
What is the term for the change in direction of sound waves as they pass from one medium to another?
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What happens to sound energy as it travels a long distance?
What happens to sound energy as it travels a long distance?
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Which of these is an example of a wave that exhibits crests and troughs?
Which of these is an example of a wave that exhibits crests and troughs?
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Which wave type can propagate through both solids and fluids?
Which wave type can propagate through both solids and fluids?
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What characteristic of a sound wave primarily determines its pitch?
What characteristic of a sound wave primarily determines its pitch?
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How are frequency and wavelength related in sound waves?
How are frequency and wavelength related in sound waves?
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What does the amplitude of a sound wave measure?
What does the amplitude of a sound wave measure?
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What is the primary difference between amplitude and pitch in sound?
What is the primary difference between amplitude and pitch in sound?
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Which characteristic of a sound wave is primarily associated with its timbre?
Which characteristic of a sound wave is primarily associated with its timbre?
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Study Notes
Sound Exam Study Notes
- Sound is made of vibrations in a medium like air or water.
- Sound does not travel through a vacuum (empty space).
- Sound travels fastest through solids, then liquids, and slowest through gases.
- Decibels measure sound intensity.
- Higher-frequency sound has a higher pitch.
- When sound waves move from one medium to another, refraction occurs (changes speed and direction).
- Wavelength is the distance between two crests or troughs of a sound wave.
- The amplitude of a sound wave determines its loudness.
- Frequency is the number of waves passing a point per second, and is related to pitch.
- Reflection of sound waves creates echoes.
- Diffraction is the bending of sound waves around obstacles.
- Attenuation is the reduction in sound intensity as it travels through a medium.
- Sound energy is absorbed or scattered during attenuation.
- Sound is a longitudinal wave.
- Transverse waves have crests and troughs.
- Light waves are an example of a transverse wave.
- Longitudinal waves cause the medium to move back and forth parallel to the direction of the wave.
- Sound waves can be used in medical imaging and underwater navigation.
- The pitch of a sound is determined by the frequency of the sound wave.
- Amplitude is related to the loudness of sound; larger amplitude equals louder sound.
- Timbre (quality or color) is influenced by harmonics and overtones.
- A home's typical sound level is 70-80 decibels.
- Concerts can be 150-160 decibels.
- A jet engine is around 110-120 decibels.
- Ultrasound is a high-frequency sound wave above human hearing range and is used in medical imaging.
- Infrasound is a sound below human hearing range and is used to detect storms.
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Description
Dive into the fascinating world of sound with this study guide. Explore key concepts such as vibrations, frequency, and the properties of sound waves. Understand how sound interacts with different mediums and the measures used to describe it, including decibels and wavelength.
