Domain: Natural Science — Physics
Target concept: Capillary Phenomenon Experiment (Different Tube Diameters)

Video generation prompt: Take three glass capillaries of different diameters and simultaneously immerse them into red water, observing the differences in the water levels within each capillary.

Evaluation guide:
(i) Target concept: Liquid ascent in narrow tubes due to adhesion-dominated interfacial energy minimization.
Minimum mechanism: Water must be polar, glass must be hydrophilic, tube interior must be clean and dry pre-immersion, and ambient pressure must be stable, enabling concave meniscus formation and sustained capillary rise without evaporation or drainage during observation.
(ii)Storyline: [Frame 0–1] Three distinct-diameter glass capillaries positioned side-by-side above red water reservoir. [Frame 2–3] All three lowered vertically and simultaneously into water; base contact is synchronous. [Frame 4–6] Immediate meniscus formation at each tube base, followed by continuous upward rise. [Frame 7–10] Rise stabilizes; final heights differ monotonically by diameter (narrowest highest). Perspective: Fixed frontal view, eye-level or slightly elevated, full setup in frame, no occlusion, consistent lighting, no moving elements other than controlled immersion.

Manual:
Experimental Procedure
1. Place three clean, dry glass capillaries of visibly different diameters side-by-side in a straight line.
2. Simultaneously lower all three vertically into a shallow dish of red-dyed water until their open ends are fully submerged.
3. Hold still and observe for 5 seconds.
Observation of Experimental Phenomena
Water rises inside each capillary; the narrowest tube shows the highest water column, the widest tube the lowest, and the middle-diameter tube an intermediate height; all columns are red and maintain concave menisci.
Summary of Experimental Principles
Capillary rise results from adhesive forces between water and glass exceeding cohesive forces within water; narrower tubes have greater surface-area-to-volume ratio, enhancing net upward adhesive force — hence higher rise.

Prompt Grounding rubric:
level_1: No glass capillary tubes appear at all, or the container of red-dyed water is missing entirely; nothing resembling the immersion setup is shown.
level_2: At least one capillary tube is visible, but there are not three of them; or the red water container is present yet none of the tubes actually touch the water; or only one or two of the tubes get lowered into the water while the rest stay untouched or set aside.
level_3: Three glass capillary tubes and a container of red-dyed water are both visible, and all three tubes end up immersed within the same continuous shot; but they are not lined up neatly side by side (e.g., one sits noticeably behind the others, tilted differently, or immersed to a different depth than its neighbors).
level_4: Beyond the above, the three tubes are visually identical in material (clear glass) and clearly differ in diameter from one another; they are lined up side by side, upright and parallel, and lowered into the same shallow dish of red water at the same time, with no tube swapped out or hidden from view.
level_5: Beyond the above, after immersion all three tubes stay still in place without drifting, tilting, or tipping over; a visible red meniscus forms at the base of each tube right as it touches the water; and the camera holds one fixed framing on the whole setup for the entire clip with no cuts or zooms.

Scientific and Causal Correctness rubric:
level_1: None of the three tubes show any liquid rising inside them; or the water column reaches the exact same height in all three regardless of their different diameters; or the red water climbs higher in the widest tube than in the narrower ones, reversing the expected order; or the liquid inside a tube looks like a solid or gel rather than a liquid column.
level_2: Liquid rises in only one or two of the three tubes rather than all three; or the red water in some tube appears to move downward instead of rising; or a rising column is clear or white rather than red like the reservoir; or a column starts rising before its tube touches the water, or keeps climbing well after immersion has clearly settled.
level_3: All three tubes show a red column rising continuously from the base with no gaps or breaks; the three final heights look nearly the same as each other, so it's hard to tell which tube rose the most, though none of the tubes shows a fully backwards ranking with the widest tube ending up highest.
level_4: Beyond the above, the three final heights are now clearly different from one another and follow tube diameter correctly: the narrowest tube has the tallest column, the widest tube the shortest, and the middle tube falls in between; no column drains back down or stalls partway through; each meniscus curves downward (concave), as expected for water against glass.
level_5: Beyond the above, the height ordering (narrowest tallest, widest shortest) is unambiguous with clear visual separation between all three columns; no bubbles or cloudiness obscure any column; the liquid surface inside each tube stays calm; and all three columns begin rising at essentially the same moment once their tubes touch the water.

Spatiotemporal Consistency rubric:
level_1: A capillary tube vanishes or is replaced with a different object between shots; the water container disappears and reappears; the room lighting switches abruptly from bright to shadowed within what should be one continuous scene; a tube visibly bends, snaps, or warps in a way glass cannot; the background flickers, changes texture, or warps between frames; or the video freezes mid-action or the motion becomes jerky and discontinuous.
level_2: A tube shifts sideways or spins in place with no hand or tool touching it; the water surface goes from calm to violently sloshing with no visible cause; a reflection on the water or a tube's surface doesn't match where the tube actually sits; the lighting on one side of the setup looks noticeably different from the other side in a way a single light source wouldn't produce.
level_3: The three tubes stay close to their starting alignment for almost the whole clip, though one tube visibly drifts or tilts a small but clearly noticeable amount partway through and then holds steady, rather than staying perfectly still like the others; the water's brightness flickers once, unconnected to any tube movement; a hand or tool briefly blocks one tube from view in a way not part of the described setup; no tube bends or breaks.
level_4: Beyond the above, all three tubes stay parallel, evenly spaced, and fixed in place with no visible drifting or tilting for the entire clip; the water surface stays flat and calm apart from the rising meniscus at each tube; shadows and highlights on the tubes and container stay consistent with a single, unmoving light source; the camera framing doesn't shift, stretch, or skip between frames.
level_5: Beyond the above, the tubes lowering into the water and the columns rising afterward both look smooth and continuous with no stutter, freeze, or sudden jump in playback speed; the camera view stays perfectly still with no drift or refocusing; the glass tubes, red water, and container keep a consistent, natural look (reflections and refraction through the glass and liquid appear stable) for the whole clip.