Overall comment (positive and clear): Excellent work — your answers show a strong beginner’s understanding of how vibration and frequency create sound and how we use ratios to describe musical relationships. You correctly identified key ideas: different objects make different sounds because they vibrate at different frequencies; ratios describe relationships between two things; musical ratios compare two frequencies; a 2:1 ratio is an octave; and Pythagoras used a monochord to explore these ideas.
Specific strengths:
- Accurate use of core terms: vibration, frequency, ratio, octave.
- Good historical link: naming Pythagoras and the monochord shows understanding that math and music are connected.
- Clear, concise answers that show you listened carefully to the clip.
How to make this exemplary answer even better:
- Give one short example: e.g., explain that if one string vibrates at 440 Hz and another at 880 Hz, their ratio is 1:2 (an octave).
- Describe the monochord in a bit more detail: it’s a single stretched string with movable bridges so different lengths (and therefore frequencies) can be compared.
- Add a simple diagram or quick experiment idea (pluck two lengths of a rubber band or string) to show the ratio in action.
Next learning steps (ACARA v9 aligned): practise calculating and simplifying ratios, measure or predict pitches using frequency, and explore how changing string length or tension changes frequency. These steps tie to ACARA goals in mathematical reasoning (ratios and proportional reasoning) and science (wave properties).
Keep up the clear thinking — you’re ready to try a hands-on activity with a monochord or digital frequency app next.