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Sound Silencing Challenge: Exploring Techniques to Decrease Volume

In this engaging investigation, students will tackle the challenge of reducing sound volume. Given the high output from a tone generator, participants will brainstorm and test various solutions to minimize sound reaching their ears. Through collaboration, they will explore methods such as covering sound sources and receivers to evaluate the effectiveness of different approaches. By leveraging their understanding of sound, pitch, and vibrations, students will experiment with instruments like kalimbas, xylophones, and more, ultimately mastering techniques for sound reduction in a fun and educational environment.

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Sound Silencing Challenge: Exploring Techniques to Decrease Volume

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  1. Physics of Sound Investigation 4: Sound Challenges Part 1 Sound Challenges

  2. objectives

  3. 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?

  4. 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?

  5. 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.

  6. 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

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