1. Why does the rate of natural groundwater recharge decrease as urban areas develop?

2. Why are medial moraines proof that valley glaciers must move?

3. Although sand dunes are the best known wind deposits, accumulations of loess are very significant in some parts of the world. What is loess? Where are such deposits found? What is the origin of this sediment?

4. How has the construction of artificial levees and dams on the Mississippi River and its tributaries contributed to a shrinking of the Mississippi's delta and its extensive wetlands?

5. What types of faults are associated with fault block mountains. Draw a diagram that helps explain your answer.

6. Glaciers must always move downhill. (Or, they are not glaciers.) Today we find glaciers retreating in many parts of the world. So, how do glaciers retreat if they must always move downhill?

7. Some glaciers deposit sediments and often those sediments are very poorly sorted. What does this mean? Why? Why are glacial sediments often poorly sorted?

8. Both domes and basins may appear as bull's-eye patterns on geological maps. That is, rings of rock around each other with each ring being a different formation. So, if a geologist finds such a pattern, how can they tell if they are looking at a dome or a basin?

9. One bright young geology student told me that they thought that the places in the world that had the most earthquakes correlated pretty well with the places in the world that have the most volcanoes. Is this true? What was the student thinking about - give some examples. And, give some other examples of places that have lots of volcanoes without earthquakes and of places that have lots of earthquakes without volcanoes. Why does it make some sense to expect earthquakes and volcanoes to often occur in the same places?

10. List four factors that affect the amount of destruction caused by seismic vibrations.