雷电
Thunder & Lightning
了解雷暴中的雷电现象：闪电是云层中形成的巨大电火花，雷声是闪电发出的声音，我们之所以先看到闪电再听到雷声，是因为光速比声速快。
Know that thunder and lightning happen during thunderstorms: lightning is a giant spark of electricity that forms in clouds, thunder is the sound the lightning makes, and we see lightning before hearing thunder because light travels faster than sound
学习证据 / Evidence
- 将闪电描述为云层中巨大的放电现象
- 解释雷声是闪电发出的声音
- 说明我们之所以先看到闪电后听到雷声，是因为光比声音传播得快
- Describe lightning as a large electrical discharge in clouds
- Explain that thunder is the sound caused by lightning
- State that we see lightning before hearing thunder because light travels faster than sound
评估问题 / Assessment
在雷暴天气中，{{name}}能解释闪电是云层中的电，雷声是闪电的声音，以及我们先看到闪电后听到雷声是因为光比声音传播得快吗？
During a thunderstorm, can {{name}} explain that lightning is electricity in the clouds, thunder is its sound, and that we see the flash before the boom because light is faster than sound?