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Physics, chemistry, biology, Earth science, space, and the environment.
Learners can explain evaporation as a kinetic-energy-tail process, describe how temperature, surface area, humidity, and airflow change its rate, and predict which conditions will make a puddle vanish fastest or slowest.
Learners can explain, in everyday language, why wet surfaces look darker by describing how water reduces diffuse reflection and lets more light enter or get absorbed.
学习者能解释盐使冰融化的微观机理（凝固点降低），并设计一个用影子长度变化间接量化融冰速率的验证实验，记录数据并得出结论。
Learners can explain, in plain words, that sensation of coldness is really about how fast heat leaves your skin — and that thermal conductivity (plus a small effect from specific heat capacity) is what makes metal feel colder than wood, even when both are at room temperature.
