What major changes did you observe between 100 years ago and 20 years ago? Complete sentences.
What is the contour interval on the topographical maps of Boomtown?
What major changes did you observe between 20 years ago and today? Complete sentences.
Which of the three locations is the most stable?
Which of the three locations is the least stable?
Explain the evidence that supports your answers to 4 and 5 above. Why was one the most stable? Why was one the least stable? Complete sentences.
Do the maps indicate possible problems for building at any of the possible locations? Complete sentences.