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Sound Later — two card actions — after your first ideaYear 2 Science · T1 W1–2 · Fresh / Sound later after

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Invented records. Tap: helper reports a short soft tick; fine card vibration not visibly seen. Rub: helper reports a soft rustle; fine card vibration not visibly seen. Both use the stated same card, support and observer position. No separate receiver motion, measured pitch, measured loudness or force value is supplied. A claim to consider after retaining your prediction: every rub is louder than every tap.

1. Name the action and what the record says happened. Which parts are from the story or your actual observation?

2. How does the finding compare with the first idea you kept?

3. What is the sound source? What can sound energy do to a receiving object? Did this record actually show a separate receiver?

4. Suggest one safe next question. What would change and what should match? Say what is still unknown.

Use your own words, picture, signs, AAC or an exact scribe. Actual results can be different from the story.

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