Domain: Natural Science — Atmospheric Science
Target concept: Heating lamp, water pan, sand pan, and s desktop sea-land breeze experiment

Video generation prompt: Place trays of sand and water side by side on a table, mount a heating lamp above the sand, and place incense in the gap between the two trays. The lamp begins switched off; the incense's smoke behavior is then observed once the lamp is turned on.

Evaluation guide:
(i) Target concept: Localized sea-land breeze analog generated by differential surface heating; requires that sand and water have contrasting thermal inertia, that heating is applied only to sand, and that incense serves as a passive tracer revealing the direction of near-surface airflow in still air.
Minimum mechanism: Air must be initially still; lamp must deliver directional radiant heat only to sand; incense must be sensitive to gentle horizontal airflow; no external drafts or fans.
(ii)Storyline: [Phase 1: Baseline] Lamp off, incense idle, no smoke, pans stationary, uniform ambient lighting. [Phase 2: Trigger] Lamp visibly activates (glow onset), no immediate smoke. [Phase 3: Response] Once the lamp's glow is visibly established, the incense tip begins emitting smoke; smoke emerges continuously and drifts unidirectionally toward the sand pan side, consistent with cooler surface air flowing from the water pan toward the heated sand. [Phase 4: Sustained Flow] Smoke maintains a laminar horizontal drift with no reversal, while the sand surface shows a heat-shimmer and the water surface remains visually undisturbed. [Perspective constraint: Fixed frontal tabletop view, full pans and incense in frame, no occlusion, no camera motion.]

Manual:
Experimental Procedure
1. Place sand pan and water pan side-by-side on tabletop.
2. Position heating lamp directly above sand pan.
3. Place upright incense stick in the gap between pans.
4. Turn lamp OFF at start; then turn ON to begin demonstration.
Observation of Experimental Phenomena
- Incense emits no smoke when lamp is OFF.
- When lamp is turned ON, incense emits continuous white-gray smoke.
- Smoke drifts horizontally from incense toward the sand pan side.
Summary of Experimental Principles
- Sand heats faster than water under identical radiation.
- Warm air above sand rises, drawing cooler, denser air from above water → creates local breeze from water to sand.
- Incense smoke visualizes this airflow direction (from the water side toward the sand side).

Prompt Grounding rubric:
level_1: Fewer than three of the five required objects (sand pan, water pan, heating lamp, incense stick, tabletop) are visible, or an object is mislabeled (for example the sand pan shown as an empty dish or a dirt tray, or the water pan shown dry), or the sand and water pans are not placed near each other on the same tabletop.
level_2: At least three of the five required objects are present, but a key placement is wrong: the heating lamp is not mounted above the sand pan, the incense stick is not located in the gap between the two pans, or the sand and water pans sit on separate surfaces rather than side by side on one tabletop.
level_3: All five objects are present and correctly identified: a pan of light-colored granular sand, a pan of water, a heating lamp mounted above the sand pan, an upright incense stick placed in the gap between the two pans, and a shared tabletop, all visible together from one fixed camera angle.
level_4: Everything required for score 3 is still true, and in addition: the incense stick stays upright and undamaged, the heating lamp shows no glow or lit filament at the very start of the video, and both pans clearly show their fill material (sand looks dry and granular, water looks liquid and reflective) rather than appearing empty.
level_5: Everything required for score 4 is still true, and in addition: the incense tip produces no visible smoke while the lamp remains off; the lamp then visibly switches on (its housing or filament shows a warm glow); and only after that glow appears does the incense tip begin releasing continuous white-gray smoke, so the lamp's off-to-on transition and the incense's no-smoke-to-smoke transition occur in the correct order. (Which pan the smoke drifts toward is a separate, scientific judgment and is not scored at this dimension.)

Scientific and Causal Correctness rubric:
level_1: The incense shows smoke before the lamp's glow appears, or no smoke ever appears, or the smoke rises straight up with no sideways drift, or the smoke drifts toward the water pan, or smoke appears to come from both pans rather than only from the incense tip; any of these means the sand-versus-water heating contrast is not being shown.
level_2: Smoke only appears after the lamp's glow is visible, but its horizontal direction is inconsistent: for instance it drifts toward the water pan at some point, or wavers back and forth with no settled direction; or visible smoke is already present well before the lamp's glow is clearly established, so the on/off cue and the start of smoke are not clearly linked.
level_3: The incense tip stays smoke-free while the lamp is off, begins producing smoke only once the lamp's glow is clearly visible, and that smoke then holds a consistent net drift from the incense toward the sand pan (not toward the water pan), showing cooler surface air moving in from the water side to replace the warm air rising over the heated sand.
level_4: All of the 3-point behavior above still holds, and additionally: the sand surface shows a visible heat-shimmer or haze that the water surface does not show, and neither pan's surface itself gives off any smoke or vapor; only the incense tip does.
level_5: All of the 4-point behavior above still holds, and additionally: the smoke keeps drifting mainly sideways toward the sand pan rather than rising steeply or curling back toward the water pan for the rest of the sequence, the heat-shimmer above the sand only appears after the lamp's glow is visible (not before), and the water surface shows no shimmer or disturbance at any point.

Spatiotemporal Consistency rubric:
level_1: The incense stick, a pan, or the lamp appears to jump to a new position or appears out of nowhere between moments (for instance incense appearing mid-air with no placement shown, or the lamp housing relocating without passing through the space in between), or the tabletop itself disappears or reappears, or a shadow's direction reverses without any change in the lamp's on/off state.
level_2: Smaller inconsistencies appear: the incense stick shifts sideways by more than its own width between nearby moments with no visible cause, the sand or water fill level changes with no explanation, the lamp casts a shadow as though lit while its glow is not shown, or the tabletop's edge bends or warps unnaturally.
level_3: The sand pan, water pan, incense stick, and lamp each hold a constant position and size relative to one another through the whole sequence: the two pans stay adjacent with the same gap, the incense stays centered in that gap, and the lamp stays fixed above the sand pan; none of the four goes missing from frame or reappears from nowhere; the overall scene brightens only when the lamp is itself shown turning on, with no unexplained flicker.
level_4: The object-permanence and lighting behavior described for score 3 still holds, and additionally: the lamp's glow brightens gradually rather than snapping on instantly, the smoke plume rises and drifts as one continuous, unbroken column with no sudden gaps or jumps in thickness from one moment to the next, and the tabletop's surface texture and reflectivity stay uniform throughout.
level_5: The behavior described for score 4 still holds, and additionally: the smoke's sideways drift proceeds smoothly with no frame-to-frame reversals or erratic jitter, the lamp's brightness rises smoothly from off to on with no flickering or pulsing, the incense stick itself stays still (no swaying or vibrating) while releasing smoke, and the camera's framing of the pans, lamp, and incense stays fixed for the entire sequence.