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A small red-hot steel ball is lowered with metal tongs into a glass beaker of water behind a safety shield. Loud hissing erupts, dense bubbles rush up, and the glow fades.

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Per-prompt rubric

Basic standards

Visual presence

  • a red-hot steel ball
  • metal tongs
  • a glass beaker of water
  • a safety shield

Event: a red-hot steel ball is lowered into water behind a safety shield

Audio presence

  • boiling water

Sound: hissing of water boiling on hot metal

Key standards

Visual physical commonsense (V-PC)

  • A red-hot steel ball is held by metal tongs and lowered into water in a beaker behind a safety shield, contacting the water surface.
  • Dense rising bubbles appear and the ball's glow fades after contact with the water.

Audio physical commonsense (A-PC)

  • A sustained intense hissing is audible consistent with rapid boiling from a superheated object in water.

Cross-modal physical commonsense (AV-PC)

  • The hissing onset coincides temporally with the steel ball contacting the water.