四季的成因
Why We Have Seasons
解释四季是由地球绕太阳公转时地轴倾斜造成的，并区分这一正确解释与常见误解——即认为四季是由地球与太阳距离变化造成的。
Explain that the seasons are caused by the tilt of Earth's axis during its orbit around the Sun, distinguishing this from the common misconception that seasons are caused by changing distance from the Sun
学习证据 / Evidence
- 能解释地球的自转轴相对于公转轨道平面倾斜约 23.5°
- 能描述倾斜的地轴如何使一个半球在夏季接收到更多直射阳光，在冬季接收到更少直射阳光
- 能反驳“季节由地球与太阳的距离决定”的误解，并指出地球实际上在1月份离太阳稍近一些
- Explains that Earth's axis is tilted at about 23.5° relative to its orbit
- Describes how the tilted axis causes one hemisphere to receive more direct sunlight in summer and less in winter
- Refutes the misconception that distance from the Sun causes seasons by noting Earth is actually slightly closer to the Sun in January
评估问题 / Assessment
如果 {{name}} 被问到为什么英国是炎热的夏天，而澳大利亚在同一时间却很冷，{{name}} 能不能解释清楚：这与离太阳更近无关，而是取决于地球的哪一半朝向太阳？
If {{name}} was asked why the UK is hot in summer but Australia is cold at the same time, could they explain that it's not about being closer to the Sun but about which half of the Earth is tilted towards the Sun?