S2.7.6 For the adult
High and low notes
Why can one rubber band make high and low notes?
What this chapter teaches
A faster vibration makes a higher note. A tight, thin or short band shakes faster, and water in a bottle changes the note in different ways depending on whether you tap it or blow across it.
Three questions to ask
There is no one right wording. Listen for the idea.
- What can you change to make a rubber band sound higher?
- How does a high note differ from a low note in the way the thing shakes?
- What will you hear if you blow across a bottle with more water, and why?
After the chapter, the learner can
- Make high and low notes with water bottles or stretched rubber bands
- Explain that faster vibrations make higher notes
What they copy into their notebook
A faster vibration makes a higher note. A tight, thin or short band gives a higher note. Tap bottles: more water gives a lower note. Blow across: more water gives a higher note.