地球的自转与昼夜交替
Earth's rotation and day/night
运用地球自转的概念，解释昼夜交替以及太阳在天空中看似移动的现象。
Use the idea of the Earth's rotation to explain day and night and the apparent movement of the sun across the sky
学习证据 / Evidence
- 解释地球每24小时绕地轴自转一周。
- 描述这种自转如何造成白天（面向太阳）和黑夜（背向太阳）。
- 解释太阳看起来在天空中移动，是因为我们随着地球自转，而不是太阳在移动。
- Explain that the Earth rotates (spins) on its axis once every 24 hours
- Describe how this rotation causes day (facing the sun) and night (facing away)
- Explain that the sun appears to move across the sky because we are rotating, not the sun
评估问题 / Assessment
{{name}}能否解释：太阳其实并没有真的在天空中移动，而是地球在自转，才让我们看起来像太阳在移动；也正是这个原因造成了白天和黑夜？
Can {{name}} explain that the sun doesn't actually move across the sky — it's the Earth spinning that makes it look like it does, and that's what causes day and night?