月相
Phases of the Moon
解释月相是地球上看到的月球表面阳光照射角度变化的结果，并描述日食和月食是如何发生的。
Explain the phases of the Moon as the changing angle of sunlight on the lunar surface as seen from Earth, and describe how solar and lunar eclipses occur
学习证据 / Evidence
- 解释月相源于太阳、地球和月球之间不断变化的几何关系，而不是地球的阴影。
- 描述大约28天内月相变化的顺序。
- 区分日食（月球位于太阳和地球之间）和月食（地球位于太阳和月球之间）。
- Explains that the phases of the Moon arise from the changing geometry of Sun, Earth, and Moon, not Earth's shadow
- Describes the sequence of Moon phases over approximately 28 days
- Distinguishes between a solar eclipse (Moon between Sun and Earth) and a lunar eclipse (Earth between Sun and Moon)
评估问题 / Assessment
如果{{name}}某天晚上看到月亮呈细细的月牙，两周后又看到满月，那么能否解释是什么发生了变化、为什么会这样，并描述月食时会发生什么？
If {{name}} noticed the Moon looking like a thin crescent one night and a full circle two weeks later, could they explain what has changed and why — and describe what happens during a lunar eclipse?