Domain: Humanities and Social Sciences — Geography
Target concept: Lithospheric Landforms: American Plateau (a flat and extensive area, appearing light brown in satellite imagery) and Asian Mountains (a rugged linear region, appearing dark brown in satellite imagery)

Video generation prompt: The screen first displayed a satellite view of the American Plateau, followed by a satellite view of a mountain range in Asia. The visual compared the differences in color and morphology between the two regions through satellite imagery.

Evaluation guide:
(i) Target concept: Satellite-based visual differentiation of endogenic landforms by morphology and spectral signature.
Minimum mechanism: Light brown hue requires exposed, low-vegetation mineral substrate on flat terrain; dark brown hue requires high-biomass, topographically complex terrain with consistent solar illumination and atmospheric scattering conditions.
(ii)Storyline: Frame 0–4s: Stable overhead satellite view centered on a vast, uninterrupted light brown expanse with gentle gradients and no major linear features, visually unambiguous as a plateau. Frame 4–7s: Smooth lateral pan or slow zoom-out revealing contiguous transition to a sharply defined, sinuous dark brown zone with parallel ridges, intersecting valleys, and high relief contrast, unmistakably mountainous. Frame 7–10s: Final composition includes partial overlap or adjacent framing of both regions under identical lighting, enabling direct side-by-side visual comparison of color saturation and morphological grain. Throughout: fixed sun azimuth, no cloud interference, no perspective warp, no temporal discontinuity.

Manual:
Experimental Procedure
1. Display a stable satellite view of a flat and extensive light brown landform (American Plateau).
2. Transition smoothly to a satellite view of a linear and rugged dark brown landform (Asian Mountains).
3. Ensure both views use consistent lighting, scale, and perspective for direct comparison.
Observation of Experimental Phenomena
- First view: uniform light brown color and horizontal, featureless topography extending across frame.
- Second view: dark brown color with parallel ridges, deep valleys, and sharp elevation contrasts.
- Side-by-side or sequential framing reveals clear contrast in color (light vs. dark brown) and morphology (flat/extensive vs. linear/rugged).
Summary of Experimental Principles
- American Plateau: tectonically uplifted, erosion-resistant sedimentary layers produce flat, elevated surfaces appearing light brown in satellite imagery due to sparse vegetation and exposed mineral soils.
- Asian Mountains: young, tectonically active fold-and-thrust belts with steep slopes and dense vegetation produce linear, rugged forms appearing dark brown due to high chlorophyll reflectance and shadow accumulation.

Prompt Grounding rubric:
level_1: No satellite imagery appears; or only one region shown (either American Plateau or Asian Mountains alone); or neither region matches the specified landform types (e.g., shows ocean, forest, city, or non-plateau/non-mountain terrain); or no sequential transition between regions.
level_2: Satellite imagery appears but both regions are misidentified: American Plateau is absent or replaced with a non-plateau landform (e.g., folded hills, volcanic cones, or coastal plain), and/or Asian Mountains are absent or replaced with a non-mountain landform (e.g., plateau, basin, or flat desert); sequence may exist but objects are incorrect type.
level_3: Satellite imagery shows two distinct landforms in the correct order: first a flat, extensive area (American Plateau), then a linear, rugged area (Asian Mountains), both clearly landmasses (not ocean or cloud cover); however, at least one region is only partially shown (e.g., cropped so its overall flat or rugged extent doesn't fit in the frame), or the two views are shot at such different zoom levels that they can't be recognized as comparable-scale views of land.
level_4: Both landforms are fully framed and correctly identified by shape and extent: the American Plateau appears as a broad, flat, extensive area, and the Asian Mountains appear as a linear, rugged, high-relief area; the sequence (Plateau first, Mountains second) and the object types are correct; but the two views never share a single composition, e.g., they appear only as fully separate, isolated shots with nothing visually linking them, or the cut between them gives no framing cue that invites a direct comparison.
level_5: All conditions for score 4 are met, AND at some point in the video both landforms are visible together within a single shared composition (e.g., adjacent panels, one wide frame, or an overlapping split-view) that lets a viewer directly compare their shapes side by side, rather than only recalling one landform from an earlier, separate shot.

Scientific and Causal Correctness rubric:
level_1: No scientifically valid landform representation: e.g., American Plateau appears rugged or dark brown; Asian Mountains appear flat or light brown; or both regions share identical morphology/color; or color-morphology pairing is reversed (light brown mountains or dark brown plateau).
level_2: One landform matches its expected morphology (flat vs. rugged) but has wrong color (e.g., flat area is dark brown), and the other landform has both morphology and color wrong; or both have correct morphology but both colors wrong; causal relationship between landform type and satellite color/morphology is fully absent.
level_3: Morphology is correct for both: first region is flat and extensive, second is linear and rugged; color assignment is partially correct: either light brown appears on the first region OR dark brown appears on the second region, but not both; no inversion; causal link (plateau → light brown due to exposed sedimentary rock/soil; mountains → dark brown due to forested/vegetated steep slopes) is implied by correct pairing but not fully realized.
level_4: Both morphology and color are correct and consistently paired: first region is flat/extensive AND light brown; second region is linear/rugged AND dark brown; causal relationship is visually supported (e.g., texture, shadow patterns, edge definition align with real-world satellite signatures); but one non-core scientific flaw exists, e.g., unrealistic sharp boundary between regions, or artificial uniformity violating natural variability within each landform type.
level_5: All morphology-color pairings are correct and geographically plausible: light brown flatness reflects arid/semi-arid plateau surface (e.g., Colorado Plateau); dark brown linearity reflects densely vegetated, high-relief mountain range (e.g., Himalayas or Hengduan Mountains); texture, shadow orientation, and edge gradation match real satellite behavior; no simplification contradicts known remote sensing principles; causal chain (landform structure + surface cover → spectral signature → perceived color in false-color/natural-color satellite view) is fully preserved.

Spatiotemporal Consistency rubric:
level_1: Severe spatiotemporal rupture: e.g., sudden teleportation of viewpoint, discontinuous lighting (day → night mid-sequence), structural break (landform fragments or warps), or abrupt scale shift (zoom-in without motion cue) between frames; or more than one jarring cut or flash.
level_2: Multiple medium disruptions: e.g., two or more hard cuts with no transitional cue; inconsistent sun position causing shadows to flip direction between regions; or visible stitching artifacts, warping, or ghosting across frames; motion is jerky or frozen for >1 second without intent.
level_3: One spatiotemporal flaw present: e.g., single hard cut between regions (no fade, slide, or zoom transition); or minor lighting inconsistency (e.g., cloud cover appears only on one region); or brief moment of geometric distortion (e.g., stretch during transition), but overall scene remains recognizable and landform identity is preserved.
level_4: Spatiotemporal continuity is maintained throughout: no cuts, no distortion, no lighting reversal, no structural breaks; motion (if any) is smooth and physically plausible; sun angle, shadow direction, and atmospheric clarity are consistent across both regions; only one minor flaw: e.g., momentary inter-frame flicker or negligible aliasing at landform edge.
level_5: Zero spatiotemporal flaws: seamless, unbroken 10-second flow; viewpoint remains fixed or moves with natural, steady camera motion (e.g., slow lateral pan or gentle zoom); lighting, shadow direction, haze level, and perspective are fully consistent; no frame duplication, stutter, warping, or edge artifact; all transitions preserve geometric integrity and relative spatial relationships.