Domain: Humanities and Social Sciences — Geography
Target concept: Water Sphere Symbols: Surface Ocean Currents in the Asian Seas (Clockwise Circulation, Satellite Color) and Inland Lake Currents in Europe (Counterclockwise Circulation, Lake Texture)

Video generation prompt: First, a large map of the Asian marine basins is presented, showing surface ocean currents driven by wind and the Coriolis force with arrows. Subsequently, a map of inland lakes in Europe is shown, illustrating surface water movements driven by local winds with arrows. The formation processes and flow directions of these two types of currents are clearly demonstrated through distinct arrows and a top-down perspective.

Evaluation guide:
(i) Target concept: Visual differentiation of wind-driven surface circulation patterns between an open-ocean marginal-sea basin and an enclosed freshwater lake in the Northern Hemisphere.
Minimum mechanism: Clockwise gyres in the Asian marginal seas arise from subtropical anticyclonic wind stress reinforced by rightward Coriolis deflection (the basin is large enough for Coriolis to matter). In large European lakes such as Lake Geneva or Lake Constance, the documented counterclockwise (cyclonic) surface gyre is driven primarily by the prevailing local wind pattern acting on the closed basin shape, with Coriolis contributing only a secondary, size-dependent effect; it is not a general rule that Northern-Hemisphere lakes rotate opposite to oceans, since most smaller lakes show no consistent rotation-driven circulation at all. Both circulation senses must manifest as closed, curved, unidirectional arrow loops in top-down view.
(ii)Storyline: Frame 1-3: Asian marine basins map enters full-frame, top-down, static; clockwise-curved, satellite-colored arrows render fully and simultaneously over the water. Frame 4-7: Seamless transition (pan/fade) reveals the European inland lakes map entering an adjacent or lower portion of the same frame; counterclockwise-curved arrows render over the lake with visible surface texture. Frame 8-10: Both maps coexist stably in a fixed composition; no motion except possible subtle ambient shimmer on the lake texture; all arrows remain static and fully visible. Perspective remains strictly orthogonal; no camera movement, zoom, or tilt at any point.

Manual:
Experimental Procedure
1. Display a large top-down map of the Asian marine basins with satellite-color-coded arrows showing clockwise surface ocean circulation.
2. Transition to a top-down map of European inland lakes with textured surface and arrows showing counterclockwise surface water circulation.
Observation of Experimental Phenomena
- Asian map: closed-loop arrows curving clockwise around the marginal seas; a color gradient (e.g., warm to cool) along the current paths.
- European map: closed-loop arrows curving counterclockwise within the lake boundary; granular/wavy surface texture distinct from the ocean rendering.
Summary of Experimental Principles
- Asian surface ocean currents, driven by trade/westerly winds plus the Coriolis force, form clockwise gyres in Northern Hemisphere subtropical marginal seas.
- Large European lakes (e.g., Lake Geneva, Lake Constance) develop counterclockwise surface gyres primarily from the interaction of the prevailing local wind pattern with the closed basin shape; the Coriolis force contributes only a secondary, size-dependent effect and is not the general reason lake circulation differs from ocean circulation — most smaller lakes show no consistent Coriolis-driven rotation at all.

Prompt Grounding rubric:
level_1: Neither a map of the Asian marine basins nor a map of the European inland lakes appears anywhere in the video; no arrows depicting surface currents are shown on any map; the perspective is never top-down; the video instead shows unrelated content such as bare terrain, text slides, or animated characters.
level_2: Only one of the two required maps appears (the Asian marine-basin map or the European lake map, not both); or a map appears with no arrows on it at all; or arrows are present but drawn as unoriented lines or dots with no directional heads; or the camera view is tilted, oblique, or moving rather than top-down.
level_3: Both the Asian marine-basin map and the European lake map appear, both in top-down perspective, and both carry arrows over the water; however, on at least one map the arrows lack arrowheads, float away from the water body, or are rendered in a style inconsistent with the other map (e.g., solid arrows on one, dashed unheaded lines on the other).
level_4: Both maps appear top-down with arrows correctly overlaid on the water bodies, and every arrow carries a visible directional arrowhead; arrow density is enough to suggest a circulation pattern on each map; however, the two maps' rotational senses are not clearly distinguishable from one another: for example both sets of arrows curve the same way, the curvature/looping is too faint to read a rotation direction on at least one map, or the two senses are distinguishable but swapped relative to the intended pattern (e.g., the Asian map curves counterclockwise while the European map curves clockwise).
level_5: Both maps appear with strict top-down perspective; on each map the arrows form a continuous, closed, curved loop confined within that map's water body (the marine basins for the Asian map, the depicted lake outline for the European map); the Asian marine-basins map's loop curves clockwise and the European lake map's loop curves counterclockwise, so the two rotational senses are not only distinguishable but correctly assigned; arrow styling (thickness, color, arrowhead shape) is internally consistent within each map.

Scientific and Causal Correctness rubric:
level_1: Arrows bear no relationship to the water bodies (e.g., they sit on land or scatter randomly); the depicted rotation is reversed from the intended concept: clockwise arrows appear in the European lake map, or counterclockwise arrows appear in the Asian marine-basin map; no distinction is made between the wind-driven surface flow depicted and any other current type.
level_2: Arrows stay within the water bodies but their direction is uniformly wrong on at least one map (e.g., every arrow on a map points the same fixed compass direction regardless of position); or the rotational sense is swapped between the two maps (clockwise in the European lake, counterclockwise in the Asian seas); or the arrows are straight rather than curved/rotational, failing to depict any circulation.
level_3: One map shows the expected rotational sense (clockwise arrows over the Asian marine basins, or counterclockwise arrows over the European lake) while the other map shows straight, non-looping arrows that depict no rotation at all; or both maps show closed loops but the sense of rotation is too symmetric or faint to tell which way either one turns.
level_4: The Asian marine-basin map shows a clockwise closed-loop pattern and the European lake map shows a counterclockwise closed-loop pattern, each consistent with its basin shape; however, either the Asian map's arrows lack the expected warm/cool color variation associated with different current branches, or the European lake's surface lacks any distinguishing textured or wavy rendering that sets it apart from an open-ocean look.
level_5: The Asian marine-basin map displays warm/cool color-coded arrows forming a clockwise closed loop consistent with known regional current patterns (e.g., a warm-toned poleward current on one side of the basin, a cooler equatorward current on the other); the European lake map displays a distinctly textured, wavy surface with arrows forming a counterclockwise closed loop; both rotational directions match the intended concept, and no arrow crosses onto land or points in a direction inconsistent with a closed circulation pattern.

Spatiotemporal Consistency rubric:
level_1: One or both maps abruptly appear or disappear with no transition; arrows flicker on and off or vanish and reappear without any animation; the camera view switches from top-down to an angled tilt partway through; the scene's overall brightness jumps sharply from one shot to the next; a water body's outline warps or dissolves during the changeover between maps.
level_2: The changeover from the Asian map to the European map happens as a hard cut with no fade, dissolve, or pan; one map is already fully drawn before the other has even started to appear; arrows on the same map appear at noticeably different times from one another with no consistent pattern; a map's border or frame stretches or scales unevenly while on screen.
level_3: Both maps are shown fully formed and held in fixed positions, with all their arrows already drawn (none seen mid-animation); however, the two maps appear in separate, disconnected scenes: for example the Asian map fills the screen, cuts to a blank frame, then the European map fills the screen, or one map's edge overlaps and hides part of the other without any clear boundary between them.
level_4: The two maps are shown together or in direct sequence within one continuous scene, both held at a fixed top-down angle with no stretching, scaling, or sudden brightness change; the arrows on both maps appear together at the same time, or in a consistent Asia-then-Europe order; however, one of the maps can be seen to wobble or drift slightly out of place at some point in the clip.
level_5: The camera holds a fixed top-down view of both maps for the entire clip; both maps stay fully visible without overlapping each other and without any visible warping or skewing of their outlines; the changeover from the Asian map to the European map happens through a smooth pan or gradual fade rather than a cut; once drawn, every arrow stays fixed in place with no further movement; the brightness, contrast, and color saturation look the same on both maps throughout the entire clip.