Target: explain one geological, one geomorphic and one atmospheric/surface interaction without treating the labels as exclusive. Prepare: Card B and hazard-to-impact aid.
- Launch · 2 min. Show “rain”, “loose slope material” and “fault slip.” Ask which begins inside Earth.
- Model · 4 min. Draw B3: accumulated stress→sudden fault slip→shaking. B1: heavy rain and runoff→creek overtopping. B2: saturated material on steep slope→downslope movement. Label cause, process and possible hazard separately.
- Guided reading · 5 min. Students put B1, B2, B3 under atmospheric/surface, geomorphic and geological headings, then add that rainfall can interact with the slope in B2. No specific disaster follows automatically.
- Practice route · 7 min. Choose Day 2 route. Explain two distinct causal chains and a cross-process interaction with the supplied wording.
- Audit · 4 min. Swap “all landslides are caused by rain” for “rainfall is one possible influence in this model”; check no earthquake probability is inferred for any named place.
- Exit · 3 min. “What process produces B3 shaking?” Key: imagined sudden slip on a fault, not rain.