月球的轨道
The Moon's Orbit
知道月球大约每月绕地球运行一圈，它本身不发光，而是反射太阳光；月球外观的变化（月相）取决于我们从地球上能看到多少被太阳照亮的一面。
Know that the Moon orbits Earth approximately once a month, that it does not make its own light but reflects sunlight, and that its changing appearance (phases) is caused by how much of the sunlit side we can see from Earth
学习证据 / Evidence
- 说出月球大约每28至30天绕地球运行一圈
- 解释月球反射太阳光，而不是自己发光
- 描述月相是如何发生的：随着月球绕地球运行，我们会看到被照亮部分的不同大小
- State that the Moon orbits Earth roughly once every 28-30 days
- Explain that the Moon reflects sunlight rather than producing its own light
- Describe how Moon phases happen: we see different amounts of the lit-up side as the Moon orbits Earth
评估问题 / Assessment
{{name}}能解释为什么月球看起来会改变形状吗——它一直是圆的，但我们只能看到被太阳照亮的部分？
Can {{name}} explain why the Moon seems to change shape — that it’s always round but we only see the part lit up by the Sun?