声音随距离减弱
Sound Fading with Distance
认识到随着与声源距离的增加，声音会变得越来越轻
Recognise that sounds get fainter as the distance from the sound source increases
学习证据 / Evidence
- 说出声音离声源越远就越轻
- 描述一次观察或实验来证明这一规律
- 解释振动会向外扩散，并在传播过程中逐渐变弱
- State that sound gets quieter as distance from the source increases
- Describe an observation or investigation demonstrating this pattern
- Explain that vibrations spread out and get weaker as they travel further from the source
评估问题 / Assessment
{{name}}能解释为什么朋友走得越远，声音就越难听清吗？
Can {{name}} explain why a friend's voice gets harder to hear the further away they walk?