Chladni Sand Patterns
Sand jumps into geometric lines/patterns.
Teaching & key ideas
What you do: Drive plate at selected frequencies.
What students see: Sand jumps into geometric lines/patterns.
Why it works: Standing waves have nodes that barely move; sand collects there.
Question to ask: Why does the sand choose certain lines?
Lesson flow
Predict → demonstrate → observe → briefly explain → ask: Why does the sand choose certain lines?