1. What Causes Sound (声音是由什么引起的) 1
2. How Sound Travels (声音是怎样传播的) 9
3. A Slowpoke (慢吞吞的角色) 19
4. Echoes (回声) 23
5. Loudness (音量) 26
6. Pitch (音高) 29
7. Noise and Music (噪音和音乐) 34
8. Musical Instruments (乐器) 37
9. “Canned”Sounds (“灌制的”声音) 42
10. How We Talk (我们是怎样谈话的) 47
11. Other Animals That Make Themselves Heard (能让人听见其声音的其他动物) 50
12. How We Hear (我们是怎样听得见的) 54
13. Eara and Ears (耳朵和耳朵) 63
14. Do You Know Now? (现在你知道了吗？) 66
参考译文 67
总词汇表 86