1. With words and pictures, illustrate the main kinds of seismic waves.

2. Compare and contrast body waves and surface waves.

3. Compare and contrast P waves and S waves.

4. Explain the generation of a head wave using Huygen's principle.

5. Derive refraction travel-time equations for a single horizontal interface.

6. Thoroughly discuss the layer case where V₀< V₁< V₂.

7. Thoroughly discuss the layer case where V₁< V₀< V₂.

8. Describe and discuss P wave velocities in earth materials.

9. In what geologic situations and for what purposes is seismic refraction a useful method?

10. Sketch travel-time graphs for these situations (as in figure 3.19 for example). Label completely.

11. Summarize a field-oriented refraction case history from the literature.

12. Discuss a real-life New Hampshire geological problem in which seismic refraction would be useful.