A metal ball rolls back and forth inside a shallow metal bowl. Each collision produces a ringing sound that becomes progressively softer.
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Per-prompt rubric
Basic standards
Visual presence
- a metal ball
- a metal bowl
Event: a metal ball rolls inside a metal bowl
Audio presence
- a metal ball
- a metal bowl
Sound: metal ball impact on metal bowl
Key standards
Visual physical commonsense (V-PC)
- The ball rolls back and forth along the bowl's curved wall with continuously diminishing motion amplitude.
- The metal ball maintains a consistent rigid spherical shape throughout the clip.
Audio physical commonsense (A-PC)
- Each collision produces a bright metallic ring whose loudness decreases on each successive impact.
Cross-modal physical commonsense (AV-PC)
- Each ringing sound coincides temporally with a visible collision between the ball and the bowl wall.