S2.7.5 For the adult
Loud and quiet
Why is a shout louder than a whisper?
What this chapter teaches
A bigger vibration makes a louder sound, and the note stays the same. A sound gets quieter with distance because it spreads out over more space.
Three questions to ask
There is no one right wording. Listen for the idea.
- How could you make the same note louder?
- Why does a bell sound quieter from far away?
- What is different about a hard pluck and a soft pluck of a rubber band?
After the chapter, the learner can
- Explain that bigger vibrations make louder sounds
- Explain why a sound gets quieter as you move away from it
What they copy into their notebook
A bigger vibration makes a louder sound. The note stays the same. A sound gets quieter as you walk away. It spreads out over a bigger space.