电磁波谱
The Electromagnetic Spectrum
描述从无线电波到伽马射线的完整电磁波谱，按照频率和能量从低到高的顺序排列；解释所有电磁波在真空中的传播速度相同；并说明不同波段的应用与危害。
Describe the full electromagnetic spectrum from radio waves to gamma rays, in order of increasing frequency and energy; explain that all EM waves travel at the same speed in a vacuum; and describe the uses and hazards of different regions
学习证据 / Evidence
- 按频率从低到高列出电磁波谱的七个波段
- 说明所有电磁波在真空中的传播速度都是 3 × 10⁸ 米/秒
- 给出电磁波谱中每个波段至少一种用途和一种危害
- 解释为什么某些电磁波比其他电磁波对生物组织更危险（与频率/能量有关）
- Lists the seven regions of the EM spectrum in order of increasing frequency
- States that all EM waves travel at 3 × 10⁸ m/s in a vacuum
- Gives at least one use and one hazard for each region of the spectrum
- Explains why some EM waves are more dangerous to living tissue than others (linked to frequency/energy)
评估问题 / Assessment
如果{{name}}听说微波、X射线和可见光都属于同一个家族，他们能否解释它们之间的区别，并分别说出每种的一种用途和一种危害？
If {{name}} heard about microwaves, X-rays, and visible light all being part of the same family, could they explain what makes them different from each other and name one useful application and one risk for each?