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Physics of Sound. Investigation 4: Sound Challenges Part 1 Sound Challenges. objectives. Decrease the volume. We have a challenge for you. We have a problem. The volume of the tone generator is very loud, but I cannot decrease the volume.

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physics of sound
Physics of Sound

Investigation 4:

Sound Challenges

Part 1

Sound Challenges

decrease the volume
Decrease the volume
  • We have a challenge for you.
  • We have a problem. The volume of the tone generator is very loud, but I cannot decrease the volume.
  • We challenge you to design a way for the least amount of sound to reach our ears.
  • Think-Pair-Share:
    • What are some possible solutions?
test the solutions
Test the solutions
  • Which solutions could we test?
    • Cover the sound source.
    • Cover the sound receivers.
  • Let’s try covering the tone generator with a plastic bin.
    • What has happened to the sound?
    • Where are the vibrations now?
  • Try covering the sound receivers.
  • Which way worked the best to

silence the sound?

the challenges
the challenges
  • We successfully solved the challenge of silencing the sound.
    • First, we worked as a group to identify possible solutions.
    • Next, we tested the ideas and decided on the best solution.
    • Finally, we identified the reasons the methods worked well.
  • Today we will use our knowledge of human ears, sound sources, pitch, and the way sound travels to solve a number of challenges.
the instruments
The instruments
  • Each challenge involves one of the instruments we used in previous activities.
  • Remember how to use the instruments appropriately.
    • Kalimba
    • Xylophone
    • String telephone
    • String beam
    • Tuning fork
    • FOSS-ulele
    • Waterphone
    • Minigutbucket
    • Long gong