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A tuning fork is struck and dipped into a bowl of water. The fork buzzes lower and the surface of the water trembles in tiny ripples.

C2-1-44 Event Transition · source_body principle: Liquid as Medium (Fluid)
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Per-prompt rubric

Basic standards

Visual presence

  • a tuning fork
  • a bowl of water

Event: a tuning fork is struck and dipped into water

Audio presence

  • a tuning fork

Sound: tuning fork buzz

Key standards

Visual physical commonsense (V-PC)

  • A two-pronged U-shaped tuning fork is struck and then dipped into a bowl of water.
  • Tiny ripples appear on the water surface as the fork enters.

Audio physical commonsense (A-PC)

  • The tuning-fork buzz is audible as a clear pure tone in air.
  • The buzz becomes noticeably lower and more muffled once the fork is dipped into water.

Cross-modal physical commonsense (AV-PC)

  • The shift in buzz character coincides temporally with the fork entering the water.