| Title | Comment | Keywords |
|---|---|---|
| Seismic Waves | 03:26 - 03:49 (00:23) / 0.4 MB | "seismic wave", "sound wave", "Thomas Henyey" |
| Deriving Distances and Shapes | 04:38 - 05:01 (00:23) / 0.3 MB | "Thomas Henyey", "seismic wave", distance, shape |
| Artificial Earthquakes | 06:16 - 07:22 (01:06) / 1.0 MB | "Vibra-seis truck", explosive, X-ray, "Thomas Henyey" |
| Continental Crust | 08:12 - 09:20 (01:08) / 1.2 MB | "Thomas Henyey", "continental crust", "igneous rock", metamorphism, "sedimentary rock", "igneous rock", "metamorphic rock", "sedimentary rock", silicate |