Podcast
Questions and Answers
Sound waves are best described as which type of wave?
Sound waves are best described as which type of wave?
- Seismic
- Transverse
- Electromagnetic
- Longitudinal (correct)
Sound waves can travel through a vacuum.
Sound waves can travel through a vacuum.
False (B)
What is the relationship between the frequency of a sound wave and its pitch?
What is the relationship between the frequency of a sound wave and its pitch?
The higher the frequency, the higher the pitch.
The areas in a sound wave where molecules are closer together are called ______.
The areas in a sound wave where molecules are closer together are called ______.
Match the following terms with their definitions related to sound waves:
Match the following terms with their definitions related to sound waves:
Which of the following states of matter generally allows sound to travel the fastest?
Which of the following states of matter generally allows sound to travel the fastest?
Intensity of a sound wave is determined by its frequency.
Intensity of a sound wave is determined by its frequency.
Explain how sound waves cause our eardrums to vibrate, allowing us to hear.
Explain how sound waves cause our eardrums to vibrate, allowing us to hear.
The region in a sound wave where molecules are further apart is known as a ______.
The region in a sound wave where molecules are further apart is known as a ______.
If the frequency of a sound wave increases, what happens to its wavelength, assuming the speed of sound remains constant?
If the frequency of a sound wave increases, what happens to its wavelength, assuming the speed of sound remains constant?
In outer space, it is possible to hear explosions as depicted in some movies.
In outer space, it is possible to hear explosions as depicted in some movies.
Explain how the properties of a medium affect the speed at which sound travels through it.
Explain how the properties of a medium affect the speed at which sound travels through it.
The strength or amplitude of vibrations producing a sound determines its ______.
The strength or amplitude of vibrations producing a sound determines its ______.
Which of the following scenarios would result in the highest pitch?
Which of the following scenarios would result in the highest pitch?
Doubling the frequency of a wave source will double the speed of the waves produced.
Doubling the frequency of a wave source will double the speed of the waves produced.
Why does sound travel faster through steel than through air?
Why does sound travel faster through steel than through air?
Our ears are accustomed to hearing sound through a ______.
Our ears are accustomed to hearing sound through a ______.
Two waves are traveling through nitrogen gas. Wave A has a wavelength of 1.5 m, while Wave B has a wavelength of 4.5 m. The speed of Wave B must be ______ the speed of Wave A.
Two waves are traveling through nitrogen gas. Wave A has a wavelength of 1.5 m, while Wave B has a wavelength of 4.5 m. The speed of Wave B must be ______ the speed of Wave A.
Why do we typically experience a higher pitch when a jet is approaching us and a lower pitch as it moves away?
Why do we typically experience a higher pitch when a jet is approaching us and a lower pitch as it moves away?
Match the visual representations of sound waves with the correct labels for pitch (high, medium, low):
Match the visual representations of sound waves with the correct labels for pitch (high, medium, low):
A teacher attaches a slinky to the wall and sends two pulses with different amplitudes. Which pulse will reach the wall first?
A teacher attaches a slinky to the wall and sends two pulses with different amplitudes. Which pulse will reach the wall first?
A teacher then sends two slinky pulses with different wavelengths. Which pulse will reach the wall first?
A teacher then sends two slinky pulses with different wavelengths. Which pulse will reach the wall first?
Sound energy travels on a ____ wave.
Sound energy travels on a ____ wave.
Sound travels better through a ____ medium than a ____ medium.
Sound travels better through a ____ medium than a ____ medium.
The distance from the end of one compression to the beginning of the next compression is called the ______.
The distance from the end of one compression to the beginning of the next compression is called the ______.
Flashcards
Longitudinal Wave
Longitudinal Wave
A wave where the particle vibration is parallel to the wave's direction.
Transverse Wave
Transverse Wave
A wave where the particle vibration is perpendicular to the wave's direction.
How sound travels
How sound travels
Sound travels by pushing particles in a medium, like dominoes falling.
Medium
Medium
Signup and view all the flashcards
Compression
Compression
Signup and view all the flashcards
Rarefaction
Rarefaction
Signup and view all the flashcards
Wavelength
Wavelength
Signup and view all the flashcards
Frequency
Frequency
Signup and view all the flashcards
Pitch
Pitch
Signup and view all the flashcards
Intensity
Intensity
Signup and view all the flashcards
Study Notes
Sound Waves & Color Charade
- Students will be able to discuss what a sound wave is, give examples of sound waves, and relate sound waves to real world applications and scenarios.
- At the end of a 60 minute period, 75% of the students should be able to perform the above.
Sound Energy and Wave Types
- Sound travels on a longitudinal wave
- Sound travels in a spiral form like a slinky.
- Longitudinal Wave: vibration of particles in the medium are parallel to the direction of wave propagation.
- Transverse Wave: vibration of particles in the medium are at right angles to the direction of wave propagation.
How Sound Waves Travel
- Waves ripple out from where the stone enters the water.
- Sound waves move across water similarly to how they travel through air.
- Vocal chords vibrate when speaking or shouting.
- These vibrations travel in all directions as waves through the air.
- Eardrums vibrate when waves reach the ears.
Sound Wave Mediums & Matter
- Sound waves travel on a medium, which can be solid, liquid, or gas
- Sound travels by pushing substance particles, then return to their original position.
- This pushes particles next to them until it reaches the ear.
- Sound travels faster through a solid, then a liquid, and slowest through a gas.
- Our ears perceive sound through gases.
Compressions, Rarefactions, Wavelength & Frequency
- Compressions are areas of sound waves with closer molecules.
- Rarefactions are areas of sound where molecules are further apart.
- Wavelength is the distance from end of compression to the end of the next compression
- Frequency is the number of waves produced per second
Pitch & Intensity
- Pitch is the rate at which vibrations are produced which correlates to frequency.
- Higher frequency equals a higher pitch.
- Intensity depends on the strength/amplitude producing the sound.
- Stronger vibrations compress air molecules more forcefully, giving greater energy and louder sound.
Sound Wave Conclusions
- Sound travels as a longitudinal wave; better through a solid medium than a liquid medium.
- Sound waves are made up of compressions and rarefactions
- Compressions are where molecules are closer together, rarefactions are where molecules are further apart.
- The distance from the end of one compression to the beginning of the next compression corresponds to the wavelength.
- More waves per second make a greater frequency; a greater frequency implies a greater pitch.
- More force put into the initial pulse means greater sound; hence, a louder sound is produced.
Review Questions
- A teacher introduces pulses with different amplitudes to a slinky attached to a wall, and both pulses will reach the wall at the same time.
- A teacher then begins introducing pulses with a slightly different wavelength, and both pulses will reach the wall at the same time.
- Doubling the frequency of a wave source does not double the speed of the waves.
- If Wave A has a wavelength of 1.5 m and Wave B has a wavelength of 4.5 m in nitrogen gas, the speed of wave B will be the same as the speed of wave A.
- As a jet approaches, the sound is heard in a higher pitch because it is closer which means smaller wavelengths, and becomes a lower pitch as it moves further away. Similarly, when the jet is closer the intensity and loudness of the sound are both higher.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
