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A smartphone plays music in the open air with a thin quiet sound. The phone is then placed inside a metal bucket, and it suddenly sounds much louder with a metallic ring.

C2-3-13 Event Transition · source_radiation principle: Resonance Amplification (Mechanics)
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Per-prompt rubric

Basic standards

Visual presence

  • a smartphone
  • a metal bucket

Event: a smartphone is placed inside a metal bucket

Audio presence

  • a smartphone

Sound: smartphone music

Key standards

Visual physical commonsense (V-PC)

  • A smartphone visibly plays music in the open air during the first part of the clip.
  • The same smartphone is then placed inside a metal bucket while the music continues.

Audio physical commonsense (A-PC)

  • The open-air music sounds thin and quiet with the character of a small phone speaker.
  • The music becomes noticeably louder with added metallic ringing once the phone is inside the bucket.

Cross-modal physical commonsense (AV-PC)

  • The music in the audio originates from the visible smartphone.
  • The shift in loudness and metallic timbre coincides with the visible moment the phone enters the bucket.