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A vibrating tuning fork is held near a small candle flame. The flame visibly flickers and bends back and forth in time with the buzzing sound.

C1-3-32 Steady State · sound_persistence principle: Resonance Amplification (Mechanics)
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Per-prompt rubric

Basic standards

Visual presence

  • a tuning fork
  • a candle flame

Event: a tuning fork is held near a candle flame

Audio presence

  • a tuning fork

Sound: a tuning fork buzz

Key standards

Visual physical commonsense (V-PC)

  • A canonical U-tine tuning fork is held vibrating in the air near a candle flame.
  • The fork hovers in the air at a small distance from the flame and stays intact throughout the clip.

Audio physical commonsense (A-PC)

  • The fork produces a clear sustained tone at a stable fundamental pitch.
  • The fork tone is loud enough to be distinctly audible in the audio.

Cross-modal physical commonsense (AV-PC)

  • The flame visibly flickers and bends while the fork is vibrating near it.
  • The flame's flicker oscillation is synchronized in time with the audible buzzing of the fork.