| Title | Comment | Keywords |
|---|---|---|
| Defining the Earth's Interior | 05:29 - 06:16 (00:47) / 0.8 MB | reflection, refraction, travel-time, "Earth's interior", "Don L. Anderson" |
| reflection, refraction | n.a. / n.a. | reflection, refraction, tsunami | class="light"
| Petroleum Exploration | 04:15 - 05:00 (00:45) / 0.8 MB | "Stephen Scott", exploration, structure, oil, gas, density, geologist, "seismic wave", crust, rock, hardness, "rock formation", "rock layer", contact, reflection, image |